Prof. Wasantha Mampearachchi

Santhirasegaram, K., Mampearachchi, W.K., Singh. D, Singh,D., Vanajakshi, L., Verma, A., Das, A. (eds) ,".Investigation of Physical and Chemical Properties in RAP Materials..",Proceedings of the Fifth International Conference of Transportation Research Group of India ,India,2022,311-318

Wijeratne, D.D.S., Dishan, M., Mampearachchi, W.K., In: Pasindu, H.R., Bandara, S., Mampearachchi, W.K., Fwa, T.F. (eds) ,".Assessment of Operating Speeds of Rehabilitated Rural Roads with Asphalt Surfacing. .",PRoad and Airfield Pavement Technology.,University of Moratuwa,2022,57-70

Bambarandage, A.R., Jayantha, W.R.A.N., Mampearachchi, W.K., In: Pasindu, H.R., Bandara, S., Mampearachchi, W.K., Fwa, T.F. (eds,".Assessment of Laboratory and Field Compaction of Dense Graded Aggregate Bases(DGAB).",Road and Airfield Pavement Technology.,University of Moratuwa,2022,315-329

Gunarathna, S., Mampearachchi, W.K. In: Pasindu, H.R., Bandara, S., Mampearachchi, W.K., Fwa, T.F. (eds) ,".Feasibility of Usage of Waste Plastic as a Bitumen Modifier: A Review. .",Road and Airfield Pavement Technology.,University of Moratuwa,2022,829-840

P.M.A.K. Udayakantha, W. R. A. N. Jayantha, W. K. Mampearachchi,".Use of Glass Fibers in Thin Lift Stone Mastic Asphalt (SMA) Production for Low Volume Roads.",MERCON,University of Moratuwa,2021,498-503

Moses, J.A., Bandara, R.W.D.K., Mampearachchi, W.K,,".Utilization of Bottom Ash on Thin Asphalt Surfaced Pavements for Low Volume Roads.", MERCon 2020 - 6th International Multidisciplinary Moratuwa Engineering Research Conference, Proceedings,Moratuwa,2020,pp. 431–436

Jayarathna, K.A.R.N., Premarathne, R.P.P.K., Mampearachchi, W.K.,".Validation of Mechanistic-Empirical Pavement Design Approach for Flexible Pavement Design.",MERCon 2020 - 6th International Multidisciplinary Moratuwa Engineering Research Conference, Proceedings, ,Moratuwa,2020,pp. 395–400

Jayarathna, K.A.R.N., Premarathne, R.P.P.K., Mampearachchi, W.K.,".Validation of Mechanistic-Empirical Pavement Design Approach for Flexible Pavement Design.",MERCon 2020 - 6th International Multidisciplinary Moratuwa Engineering Research Conference,Moratuwa,2020,pp. 395–400

Moses, J.A., Bandara, R.W.D.K., Mampearachchi, W.K,".Utilization of Bottom Ash on Thin Asphalt Surfaced Pavements for Low Volume Roads.",MERCon 2020 - 6th International Multidisciplinary Moratuwa Engineering Research Conference,Moratuwa,2020,pp. 431–436

Buddhi Herath , B.A.D.J.C.K. Basnayake , Dimuthu Wijethunge , Y.W.R. Amarasinghe , and W.K. Mampearachchi,".Design and Development of a Portable Wireless Axle Load Measuring System for Preventing Road Damages,.",Proceedings of the 6th International Conference on Sustainable Design and Manufacturing (KES-SDM 19),KES International, Budapes, Hungaria,,2019,

Osanda Mutuhewa, and Mampearachchi, W.K. ,".Investigation on the relationship between the surface macro-texture and the application rate of tack coat.",MERCON 2019, University of Moratuwa,University of Moratuwa, Sri Lanka,2019,

Nanayakkara H. S. C. Rajapakshe, P. P. P. K. and Mampearachchi, W.K. ,".Minimize Nearby Structure Damage Issues in Road Construction .",MERCON 2019, University of Moratuwa,University of Moratuwa, Sri Lanka,2019,

Ishara Pradeep, and Mampearachchi, W.K., ,".Determination of Optimum Design Parameters for Semi Rigid Pavement .",MERCON 2019, University of Moratuwa,University of Moratuwa, Sri Lanka,2019,

.M.H.Pereraa, C.J.Athapaththua, Prof. W.K.Mampearachchia ,".Design of a porous concrete mixture for drainage coverslab in pedestrian walkways.",world conference on Transport Research-WCTR 2019,Mumbai India,2019,

Bamunuarachchi, B.P.D.P.P and, W.K. Mampearachchi ,".Investigation of Durability of Open Graded Friction Courses.",world conference on Transport Research-WCTR 2019,Mumbai India,2019,

D.D.S.Wijeratne, W.K.Mampearachchi ,".“Assessment of Operating Speeds of Rehabilitated Rural Roads with Asphalt Surfacing”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2017,

V.Satheeban, W.K.Mampearachchi ,".“Impact of Bitumen Content Tolerance Limit on Performance of Asphalt Concrete Pavements”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2017,

H.A.M.B.Kadurugamuwa, W.K.Mampearachchi ,".“Volumetric Design and Performance Evaluation of Super pave Mixtures for Sri Lankan Conditions”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2017,

C.J.Atapattu, W.K.Mampearachchi ,".“Design of Precast Concrete Cover Slab for Pedestrian Walkways”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2017,

P.M.A.B.Dissanayake, W.K.Mampearachchi ,". “Design of Semi-Rigid Pavement Based on Volumetric Properties of the Mixtures”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2017,

A.M.K.Nishantha, W.K.Mampearachchi ,".“Time Available for Compaction of Asphalt Concrete (TAC) in Tropical Countries”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2017,

Chamod Hettiarachchi,, W.K.Mampearachchi ,".“Effect of Aggregate Surface Textures, Aggregate Shape and Vibration Frequency on Packing Density of Binary Aggregate Mixtures”.",nternational Conference on Advances in Highway Engineering & Transportation,Jetwing blue, Negambo,2017,

Rajamali Masakorala, W.K.Mampearachchi ,".“Passing Sight Distance: Adequacy of AASHTO CRiteria for Two Lane Roads in Sri Lanka”.",International Conference on Advances in Highway Engineering & Transportation,Jetwing blue, Negambo,2017,

M.M.H.W.Bandara, W.K.Mampearachchi ,".“Evaluation of Water Absorption Characteristics of Internal Curing Concrete Aggregate with Respect to the Processing Temperature of Expanded Clay Types”.",,International Conference on Advances in Highway Engineering & Transportation,,Jetwing blue, Negambo,2017,

Umasangar K., ,".Study of Permeability Characteristics of Open Graded Friction Courses Used in Wearing Courses.",Civil Engineering Research Symposium ,Colombo,2016,

Bandara M. M. H. W ,".Development of Expanded Clay as Internally Curing Concrete Aggregate.",Civil Engineering Research Symposium ,Colombo,2016,

HettiarachchiH. A. C. K,".Sustainable Concrete Mix Design for Interlocking Concrete Block Pavers (ICBP).",9th Transport Research Forum,,Colombo,2016,

Kowsikan K,".Improvement of Coastal Sandy Soil by Blending the Local Uoori Clay for Subgrade Embankment and Sub Base Construction Experimental Study.",9th Transport Research Forum,,Colombo,2016,

BandaraM. M. H. W,".Development of Expanded Clay as Internally Curing Concrete Aggregate.",9th Transport Research Forum,,Colombo,2016,

Chandana N. H. S ,".Minimize the Nearby Structure Damage Issues in Road Construction.",9th Transport Research Forum,,Colombo,2016,

DharmasiriH. I. M. J. T. U., ,".In depth Analysis of Southern Expressway Accidents.",9th Transport Research Forum,,Colombo,2016,

Arulrasa A,".Systematic Ratings of Accident Prone T – Intersections on National Highways.",9th Transport Research Forum,,Colombo,2016,

Lakmal K. H. R., Mampearachchi W. K., , ,".“Analysis of Air Void Variations in Hot Mix Asphalt Wearing Course Mixtures used in Sri Lankan roads”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2015,

Inan I. I. I., Mampearachchi W. K.,".“Effect of Fine Percentage on Properties of Sub base Material”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2015,

Bambarandage A. R., Mampearachchi W. K., ,".“Energy Optimization in Compaction of Unbound Material in Road Construction”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2015,

Liyanaarachchi L. A. T. U., Mampearachchi W. K. ,". “Study on the effects of overloading on Sri Lankan Roads”,.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2015,

Nandana H.H.K.S, Mampearachchi W. K.,".“Identification of Accident Causing Factors through Detail Analysisof Road Accident Records in Sri Lanka”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2015,

Herath, H. M. S.M,".Engineering Properties of Cement and Lime Stablized Silty Sand in Pavement Subbases.",international conference on Geotechnical Engineering, Geotechnics for sustainable Development,Colombo,2015,

Hettarachchi H. A.C.K,".Improved Concrete Mix Design for ICBP using Packing Density Method.",international Conference on Advances in Highway Engineering and Transportation Systems,Colombo,2015,

Jayarathna, K.A.R. N,".Investigation of Road Deterioration using a Mechnanistic Tool Case Study on A10 Road.",international Conference on Advances in Highway Engineering and Transportation Systems,Colombo,2015,

Y. P. S. R. Piyasena and W. K. Mampearachchi ,".“Finding AADT Thresholds for Upgrading Low Volume Roads in Sri Lanka (Using HDM – 4 Model)” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2013,

W. K. Mampearachchi and N. P. Dulwala ,".“Analysis of the Flexible Pavement Sections Using Mechanistic Empirical Method” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2013,

J. N. Meegahage and W. K. Mampearachchi ,".“Evaluation of Temperature Susceptibility Measures in Penetration Grade Bitumen used in Sri Lanka”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2013,

R. A. M. C. Ranasinghe and W. K. Mampearachchi ,". “Development of Guidelines to Improve the Infrastructure to Address the Mobility of Blind and Visually Impaired Self Employed People of Sri Lanka”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2013,

D. A. S. Jayasekara and W. K. Mampearachchi ,".“Determination of Vehicle Kilometers Travelled and to Find Methodology for Calculating VKT in future Years”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2013,

M. S. K. De Silva, W. W. Bandara and W. K. Mampearachchi ,".“Steel Fiber Cement Stabilized Aggregate Base for Heavy Traffic”.",International Conference on Advances in Highway Engineering and Transport Systems,Mt. Lavinal Hotel , Sri Lanka,2013,

Mampearachchi W.K., Dahiyagamuwa T. and Marasinghe L.,".Failure Analysis of a DBST Road Using Mechanistic-Empirical Method .",Civil Engineering Research for Industry Symposium 2012 ,University of Moratuwa,2012,

Mampearachchi W.K., Jayasuriya W.W.C, Senaratne S.A.M.A.N.I., Sumanathissa R.P.P. ,".Applicability of HCM 2000 to Determine the Level of Service in Urban Arterial Roads, Sri Lanka.",Civil Engineering Research for Industry Symposium 2012 ,University of Moratuwa,2012,

J. N. Meegahage and W. K. Mampearachchi ,".“Challenges of Wearing Course Mix Design For Hambanthota International Airport” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

R. M. T. M. Dahigamuwa, D. L. Marasinghe, W. D. N. G. Wanniarachchi and W. K. Mampearachchi ,". “Mechanistic Empirical Method Of pavement Design”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

K. V. R. K. Ariyarathne and W. K. Mampearachchi ,".“Effective DGAB Construction Techniques For Optimizing Segregation During Compaction Process” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

L. D. U. N. Liyanage and W. K. Mampearachchi ,".“Optimization Of The Current Design Practice For Differently Able Road Facilities in Sri Lanka – Case Study”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

H. S. Sitinamaluwa and W. K. Mampearachchi ,".“Development of Polymer Modified Bitumen Specification For Sri Lanka”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

L. N. U. Abeysinghe and W. K. Mampearachchi ,".“Property Change of Road Metal With Blasting Effects” .",Transport research Forum University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

W. M. I. S. K. Wijekoon and W. K. Mampearachchi ,".“Relationships Between CBR and DCP Testing for Different Soil Types” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

W. W. C. Jayasuriya, S. A. M. A. N. I. Senaratne, R. P. P Sumanathissa and W. K. Mampearachchi ,". “Applicability of HCM 2000 & 1986 to Determine The Level of Service in Urban Arterial Roads, Sri Lanka” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

D. A. D. Jayasekera and W. K. Mampearachchi ,".“Study of Fuel Consumption Efficiency of Vehicle Type in Sri Lanka”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2012,

G. S. Mihirani, B. W. P. Binduhewa, G. D. D. Lalithya, Dr.W. K. Mampearachchi ,".Assessment of Asphalt Binder Grading System in Hot Mix Asphalt Pavements to Sri Lnakan Conditions.",Proceedings of the 16th Annual Symposium of Engineering Research Unit,University of Moratuwa, Sri Lanka,2011,

N. Meegahage and W. K. Mampearachchi ,".A Review of Penetration Grading System and the Suitability of Alternate Grading System for Asphalt Binders in Sri Lnakan Highways.",Transport Research Forum -University of Moratuwa , Mt. Lavinia Hotel ,2011,

H. S. Sitinamaluwa and W. K. Mampearachchi ,".Evaluation of Feasibility of Polymer Modified Asphalt Bindres for Sri Lankan Conditions.",Transport Research Forum - University of Moratuwa,Mt. Lavinia Hotel,2011,

B. Suvetha, D. G. S. Tharaka, J. A. C. L. Ranasinghe, W. K. Mampearachchi, S. Thilakasiri ,".Investigation on, Suitability of Cohessionless Soil as a Highway Construction Material.",Transport Research Forum - University of Moratuwa,Mt. Lavinia Hotel ,2011,

B. S. Madhusanka, P. A. D. Udakara, K. Hirimuthugodage and W. K. Mampearachchi ,".Comparison of Density Specifications Used for Construction of Hot Mix Asphalt (HMA).",Transport Research Forum - University of Moratuwa ,Mt. Lavinia Hotel,2011,

C. S. N. Liyanage and W. K. Mampearachchi ,".“Review of Axle Load Limits on Provincial Roads”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2011,

Y. P. S. R. Piyasena and W. K. Mampearachchi ,".Finding Threshold Based on Traffic, Sub-grade and Climate for Upgrading Surface Type of Roads Using HDM - 4 Model.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2011,

M. S. K. De Silva and W. K. Mampearachchi ,".Effectiveness of Rolling Straight Edge for Quality Control of Asphalt Concrete Surfacing.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2011,

W. W. Bandara and W. K. Mampearachchi ,".he Cement Stabilized Soil as a Road Base Material for Sri Lankan Roads.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2011,

R. M. N. Thennakoonwela and W. K. Mampearachchi ,".“Evaluation of Cost Effectiveness of Performance Based Maintenance Contract”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2011,

S. C. P. De Silva, Loshaka Perera and W. K. Mampearachchi ,".“GIS Based Classification System for Low Volume Roads”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2011,

A. M. A. N. Karuanarathne W. K. Mampearachchi and S. M. A. Nanayakkara ,".“Design of Rigid Pavement Joint Spacing for Rural Roads”.",International Conference on Advances in Highway Engineering and Transport Systems ,Mt. Lavinal Hotel , Sri Lanka,2011,

W. K. Mampearachchi ,".“Development of Road Accident Reporting Mechanism for Sri Lnaka.", International Conference on Advances in Highway Engineering and Transport Systems,Mt. Lavinal Hotel , Sri Lanka,2011,

Udila S. Pilanavithana, P. S. Perera, R. S. B. R. Appuhami, Dr. W. K. Mampearachchi ,".Optimized Mix Design for Interlocking Concrete Blocks Using Quarry Dust for Road in SriLanka.",Proceedings of the 16th Annual Symposium of Engineering Research Unit,University of Moratuwa, Sri Lanka,2010,

Senadeera A. A , Mampearachchi W. K. ,".“Determination of an Effective Laying Pattern and Best Block Shape for Concrete Block Pavement Based on Field Performance” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Pilanavithana U.S, Perera P.S, Appuhami R.S.B.R, Mampearachchi W.K. ,".“Economical Concrete Mix Design for Interlocking Block Paving for Sri Lanka”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Gunarathna. W.P.H, Mampearachchi W.K. ,".“Finite Element Model Analysis to Determine Improved Support Condition for Concrete Block Paved Low Volume Roads” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Karunarathne A.M.A.N, Mampearachchi W.K, Nanayakkara S.M.A. ,".“Simulation of Thermal Behavior of Ground Concrete Slab Exposed to Solar Radiation”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Gunasinghe P.H, Mampearachchi W.K. ,".“Rigid Pavement Design with Recycled Concrete Aggregate for Low Volume Roads”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Suneth Thushara Salawavidana, Mampearachchi W.K. ,".“Geometric Design Standards for Narrow Curves in Hilly Terrain of Sri Lanka”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Upali Liyanage, Mampearachchi W.K. ,".“Selection Criteria for Provincial Road Development”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Gunasinghe P.H, Mampearachchi W.K. ,".“Effectiveness of Traffic Forecasting on Pavement Design in Sri Lankan Roads” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Gnanasekaran S, Mampearachchi W.K. ,".“Quality Control Aspects of Asphalt Concrete Surface Regularity”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Mihirani G.S, Binduhewa B.W.P, Lalithya G.D.D, Mampearachchi W.K. ,".“Review of Grading System for Asphalt Binders in Hot Mix Asphalt Pavements".",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Fernando P.R.D, Mampearachchi W.K. ,". “Effects of super pave Specifies Aggregate Gradation on Marshall Mix Parameters”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Herath H.M.S.M, Mampearachchi W.K. ,".“Evaluating Suitability of Soil Stabilization Methods for Local Road Construction Industry” .",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Kinigama L, Mampearachchi W.K. ,".“Estimation of ESAL Values for Low Volume Roads in Provincial Sector”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

Harshana W.Sellahandi, Mampearachchi W.K. ,".“Development of Shortest Path Network with Minimum nodes for the National Roads to Maximize the Accessibility Using Breadth-first Search Algorithm”.",Transport Research Forum - University of Moratuwa,Mt. Lavinal Hotel , Sri Lanka,2010,

T. Janaraj and W. K. Mampearachchi ,".Review on Flexible Pavement Design Guidelines.",Proceedings of the 15th Annual Symposium of Engineering Research Unit,,University of Moratuwa, Sri Lanka,2009,

H. M. S. M. Herath*, M. A. W. Kumara,".Evaluating Suitability of Soil Stabilization Methods for Local Road Construction Industry.",Proceedings of the 15th Annual Symposium of Engineering Research Unit,University of Moratuwa, Sri Lanka,,2009,

A. M. A. N. Karuantathne, W. K. Mampearachchi “” , ,".Review the Guidelines of Overlay Design For Flexible Pavements.",Proceedings of the 15th Annual Symposium of Engineering Research Unit,University of Moratuwa, Sri Lanka,2009,

V. W. P. Jayasooriya, and M. A. W. Kumara,””, , ,".Construction and Demolition waste as a Base Material for Flexible Pavement.",Proceedings of the 14th Annual Symposium of Engineering Research Unit,University of Moratuwa, Sri Lanka, 2008 ,2008,

IX. J. K. U. Gayani*, M. A. W. Kumara, and S. M. A. Nanayakkara,” ”, ,,".Construction and Demolition waste For Development of Econocrete for Rigid Pavement Construction.",Proceedings of the 14th Annual Symposium of Engineering Research Unit, University of Moratuwa, Sri Lanka, ,2008,

Kumara, M. A. W., Kosgolla, J. V.*, and Bandara, J. M. S. J. “ ,".Study the effectiveness of Traffic calming Measures (Humps) .",Proceedings of the 14th Annual Symposium of Engineering Research Unit,,University of Moratuwa, Sri Lanka, ,2008,

Jayasooriya, W.*, Kumara, M. A. W. ( alias W. K. Mampearachchi) and Gayani, J. K. U.,".Construction and demolition Waste as a Road Construction Material for Pavements.",Proceedings of the 3rd International Conference (INCOTALS 2008)on South Asia Moves Forward, Mt. Lavinal Hotel , Sri Lanka, ,2008,

Kumara, M. A. W. ( alias W. K. Mampearachchi), , Organized by the department of Transport and Logistic Management and Department of Civil Engineering University of Moratuwa, held at ,".evelopment of a Road classification System for Unclassified Roads.",Proecedings of the 3rd International Conference (INCOTALS 2008)on South Asia Moves Forward,Mt. Lavinal Hotel , Sri Lanka,2008,

Patricio Tapia, M. Wasantha Kumara, Mang Tia, and Bouzid Choubane ,".Analysis, Testing and Verification of the Behavior of Composite Pavements Using a Heavy Vehicle Simulator.",International Workshop on Best Practices for Concrete Pavements,Brazil,2007,

M. W. Kumara, M. Tia, C-L Wu, and B. Choubane,".Analysis of Composite Pavements Under Moving and Static Wheel Loads from a Heavy Vehicle Simulator .",International conference on Best Practices for Ultrathin and Thin Whitetopping Pavement, Denver Colorado, April 2005 ,2005,

V. Appea, A., Kumara, M.W., Tia, M., Jackson, N.M., Choubane, B, Bergin, M.,".Concrete Slab Instrumentation Procedure and Comparison of Field Measured Responses To Computed Responses.",Proceedings of Fifth International Conference on Road and Airfield Pavement Technology,Seoul, Republic of Korea, ,2005,

M. A. W. Kumara, and J. M. S. J. Bandara,".Sustainable and Environment Friendly Approach for Low Volume Road Development.",Tenth Annual Forestry and Environment Symposium- University of Sri Jayawardanepura, Sri Lanka,University of Sri Jayawardanepura, Sri Lanka,2005,

M. W. Kumara, M. Gunaratne, John Lu, and Bruce Dietrich,,".Probabilistic Method for Pavement Crack Depth Prediction.",81st Annual meeting of Transportation Research Board (TRB),Washigton DC,2002,

S. Meka*, M. W. Kumara*, R. Pendyala ,".A Structural Equations Analysis of Withn-Household Activity and Time Allocation Between Two Adults.",81st Annual meeting of Transportation Research Board (TRB), ,Washington D.C.,2002,

Sumanasekara, S.A.S.L. and Mampearachchi, W.K.,".Axle Load Distribution Characterization for Mechanistic Pavement Design.", Engineer: Journal of the Institution of Engineers, Sri Lanka,54,2021

Jayantha, W.R.A.N. and Mampearachchi, W.K.,". Use of Demolished Concrete Waste for Resurfacing of Low Volume Roads in Sri Lanka Using Roller Compacted Concrete (RCC) Technology.",Engineer: Journal of the Institution of Engineers, Sri Lanka,54,2021

Bandara, M.M.H.W., Mampearachchi, W.K,".Mitigate the curing problems of concrete pavements by using heated non-expansive clay particles as internal curing agent.",Road Materials and Pavement Design,22(4),,2021

Bamunuarachchia, B.P.D.P.P. and Mampearachchi, W.K.,".Investigation of Durability of Open Graded Friction Courses.",Transportation Research Procedia,48,2020

Perera, I. M. H., Athapaththu, C. J. and Mampearachchi, W.K.,".Design of a porous concrete mixture for drainage coverslab in pedestrian walkways.",Transportation Research Procedia,48,2020

Hettiarachchi, C., Mampearachchi, W.K. .,".Effect of surface texture, size ratio and large particle volume fraction on packing density of binary spherical mixtures.",Granular Matter,22(8),2020

Perera, I. M. H., Athapaththu, C. J. and Mampearachchi W. K.,".Design of a porous concrete mixture for drainage coverslab in pedestrian walkways.",Transportation Research Procedia, Volume 48, 2020,2020

Hettiarachchi, C., Mampearachchi, W.K.. ,". Effect of surface texture, size ratio and large particle volume fraction on packing density of binary spherical mixtures.",Granular Matter, 22, 8 (2020) ,2020

Bamunuarachchia, B.P.D.P.P. and Mampearachchi, W.K.,". Investigation of Durability of Open Graded Friction Courses.",Transportation Research Procedia,Volume 48, 2020, ,2020

Bandara M.M.H.W., and W.K.Mampearachchi ,".Mitigate the curing problems of concrete pavements by using heated non-expansive clay particles as internal curing agent.",oad Materials and Pavement Design ,,2019

Bandara M.M.H.W., W.K.Mampearachchi and T.Anojan ,".Enhance the properties of concrete using pre-developed burnt clay chips as internally curing concrete aggregate.", Case studies in Construction Materials, ELESVIER ,open access ,2019

Buddhi Herath, B. A. D. J. C. K. Basnayake, Dimuthu Wijethunge, Y. W. R. Amarasinghe and W. K. Mampearachchi, . In Peter Ball Luisa Huaccho Huatuco Robert J. Howlett Rossi Setchi (Editors). ,".Design and Development of a Portable Wireless Axle Load Measuring System for Preventing Road Damages,.",Sustainable Design and Manufacturing 2019, Smart Innovation, Systems and Technologies,155,2019

Mampearachchi, W.K., Masakorala S. R. and Umasangar K. ,".Aggregate Interlocking of Open-Graded Friction Courses With Compaction Effort.",Journal of National Science Foundation,,2019

W.K.Mampearachchi, S.R.Masakorala* ,". “Analytical model for passing sight distance design criteria of two-lane roads in Sri Lanka”.",Transport and Telecommunication,19,2018

H.A.C.K. Hettiarachchi, W.K.Mampearachchi ,". “ Effect of vibration frequency, size ratio and large particle volume fraction on packing density of binary spherical mixtures”.",Powder Technology,336,2018

Dhanushika Gunatilake , W. K. Mampearachchi ,". “Finite element modelling approach to determine optimum dimensions for interlocking concrete blocks used for road paving”.",Road Material and Pavement design,,2018

Kajugaran, S. and W.K.Mampearachchi, , ,".Laboratory Investigation of Hot Mix Asphalt Design using Reclaimed Asphalt Pavement.",ESL Annual Transactions,,2018

Dakshitha Wijeratne and W.K. Mampearachchi, ,".Assessment of Operating Speeds of Rehabilitated Rural Roads with Asphalt Surfacing.",IESL annual Transactions,,2018

Shashibhushan Girimath,Dharamveer Singh; Evangelos Manthos; W.K. Mampearachchi , ,"."Effects of Reclaimed Asphalt Binder on Rheological Properties and Surface Free Energy of Crumb Rubber Modified Binder".",Innovative Infrastructure Solutions, ,,2018

H.A.C.K. Hettiarachchi, W.K.Mampearachchi ,".“Validity of aggregate packing models in mixture design of interlocking concrete block pavers (ICBP)”.", Road Material and Pavement design,,2017

W.K.Mampearachchi, S.R.Masakorala*, K.Umasangar** ,".“Aggregate Interlocking of Open-Graded Friction Courses With Compaction Effort.",Journal of National Science Foundation,,2017

W.W. Bandara, K.H.S.M. Sampath,".Cement Stabilized Soil as a Road Base Material for use in Sri Lankan Roads .",Journal Of Engineer, Institute of Engineers Sri Lanka,january,2017

E.M.C.B.Ekanayake, W.K.Mampearachchi ,".Review of Roundabout Design Standards and the Development of a Roundabout Design Guideline for Sri Lanka.",Journal Of Engineer, Institute of Engineers Sri Lanka,,2016

Inan, I. I. I., Udayanga, P.A.S. ,".Effect of Fine Percentage on the Properties of Sub-base Material, Journal Of Engineer.",Journal Of Engineer, Institute of Engineers Sri Lanka,October,2016

H. A. C. K. Hettiarachchi ,".New block design and laying parameters for interlocking concrete block pavements to improve human thermal comfort levels in urban spaces.",International Journal of Sustainable Building Technology and Urban Development,May,2016

H.S.Situnamaluwa, W.K.Mampearachchi ,".“Development of a Polymer Modified Bitumen Specification Based on Empirical Tests – Case Study for Sri Lanka”.",Road Materials and Pavement Design ,15,2014

W.K.Mampearachchi*, A.Senadeera ,".“Determination of the Most Effective Cement Concrete Block Laying Pattern and Shape for Road Pavement Based on Field Performance”.", Journal of Materials in Civil Engineering,26,2014

A.M.A.N.Karunaratne, W.K.Mampearachchi*, S.M.A. Nanayakkara ,". “Non Dowel Joint Spacing for Low Volume roads in Tropical countries”.",International Journal of Pavement Research and Technology,7,2014

W.K.Mampearachchi, A.Senadeera ,". “Determination of The Most Effective Cement Concrete Block Laying Pattern and Shape for Road Pavement Based on Field Performance”.",Journal of Materials in Civil Engineering- ASCE,,26,2014

W.K.Mampearachchi*, J.V.Kosgolla, M.Tia ,".“Feasibility of whitetopping pavements for resurfacing thin asphalt, pavements”.",journal of National Science Foundation,40(4),2012

W.K.Mampearachchi*, G.S.Mihirani, B.W.P.Binduhewa, G.D.D.Lalithya ,".“Review of asphalt binder grading systems for hot mix asphalt pavements in Sri Lanka”.",journal of National Science Foundation,40(4),2012

W.K.Mampearachchi*, P.R.D.Fernando ,". “Evaluation the Effect of Superpave Aggregate Gradations on Marshall Mix Design Parameters of Wearing Course”.",Journal of National Science Foundation of Sri Lanka,4,2012

W. K. Mampearachchi, B.Suwetha, D.G.S.Tharaka ,".Influence of Plasticity Index on Sub-base Material: Experimental Review.", Journal of Engineer , Annual Transaction, Volume 1, Part B,2012

W.K.Mampearachchi ,".“Towards a Proper Road Classification System for Economic Development of Sri Lanka.",Journal of Economic Review, People’ Bank,,2012

W.K. Mampearachchi, U.S.Pilanavithana, P.S.Perera, R.S.B.R.Appuhami ,".Economical Concrete Mix Design for Interlocking Concrete Paving Blocks for Sri Lanka.",Journal Of Engineer, Institute of Engineers Sri Lanka,,2011

W. K. Mampearachchchi, N.A.A.Priyantha ,"."Development of Guidelines for Low Volume Concrete Road Construction in Sri Lanka".",Journal Of Engineer, Institute of Engineers Sri Lanka,,2011

A.M.A.N.Karunaratne, W. K. Mamperarachchi, S.M.A.Nanayakkara ,".Experimental investigation of LTE in relation to crack width of non-dowelled joints in concrete.",Journal of Engineer, Annual Transaction,Volume 1, Part B,2011

W.K. Mampearachchi, J. V. Kosgolla And S. M. A. Nanayakkara ,".Development Of An Economical High Early Strength Concrete Mix For Paving Of Provincial Roads In Sri Lanka.",Journal Of Engineer, Institute of Engineers Sri Lanka,,2011

W.K.Mampearachchi , P.H.G.Gunasinghe ,".Effectiveness of Traffic Forecasting on Pavement Designs for Sri Lankans Roads.",Journal Of Engineer, Institute of Engineers Sri Lanka,,2011

W.K.Mampearachchi, T.Janaraj ,".Analysis of Structural Capacity of Hot Mix Asphalt (HMA) Designs Using Two Pavement Design Guidelines: AASHTO & TRL RN-31.",Journal of Engineer, Institute of Engineers Sri lanka,,2011

W.K.Mampearachchi, W.P.H.Gunaratne ,".“Finite Element Model Approach to Determine Support Conditions and Effective Layout for Concrete Block Paving”.",Journal of Materials in Civil Engineering- ASCE,,2010

W.K.Mampearachchi, S.B.Wanigasekara ,".Determination Of Optimum Nominal Aggregate Size For Single Surface Dressings.",Journal of Engineer, Institute of Engineers Sri lanka,,2010

P.Tapia*, M.Wasantha Kumara, M.Tia, C.L.Wu***, B. Choubane*** ,". “Evaluation of Composite Pavements Using a Heavy Vehicle Simulator”.",International Journal of Pavement Research and Technology,1,2008

M. A. W. Kumara and k. K. C. S. Kannangara,".ulvert Management System.",Annual Transaction of Institute of Engineers Sri Lanka,Volume 01 – Part B,2008

M. W. Kumara, M. Tia*, M. Bergin**, and B. Choubane** ,".“Evaluation of Early Strength Requirement of Concrete for Slab Replacement Using Accelerated Pavement Testing”.",Journal of Transportation Engineering-ASCE,132,2006

M. W. Kumara, M. Gunaratne*, J. J. Lu*, and B. Dietrich** ,". “Methodology for Random Surface-Initiated Crack Growth Prediction in Asphalt Pavements”.", Journal of Materials in Civil Engineering-ASCE,16,2004

M. W. Kumara, Mang Tia, C-L Wu, and B. Choubane ,". “Evaluation of Applicability of Ultrathin Whitetopping in Florida”.",Journal of Transportation Research Board, TRR,1823,2003

1. Shashibhushan Girimath,Dharamveer Singh; Evangelos Manthos; W.K. Mampearachchi "Effects of Reclaimed Asphalt Binder on Rheological Properties and Surface Free Energy of Crumb Rubber Modified Binder", Innovative Infrastructure Solutions, (Manuscript accepted) 2018

2. W. K. Mampearachchi 1, S. R. Masakorala 2  analytical model for passing sight distance design criteria of two-lane roads in sri lanka, Transport and Telecommunication, 2018, volume 19, no. 1, 10–20

3. Hettiarachchi, H.A.C.K. and  Mampearachchi, W. K., Effect of vibration frequency, size ratio and large particle volume fraction on packing density of binary spherical mixtures, powder Technology , May 2018

4. Dhanushika Gunatilake & W. K. Mampearachchi, Finite element modelling approach to determine optimum dimensions for interlocking concrete blocks used for road paving, Road Materail and Pavement design. Pages 1-17 | Received 22 Jan 2017, Accepted 05 Sep 2017, Published online: 11 Oct 2017

5. Hettiarachchi, H.A.C.K. and  Mampearachchi, W. K., Validity of aggregate packing models in mixture design of interlocking concrete block pavers (ICBP), Road Material and Pavement design, accepted 15 Oct, 2017

6. Mampearachchi, W.K., Masakorala S. R. and Umasangar K., Aggregate Interlocking of Open-Graded Friction Courses With Compaction Effort, Journal of National Science Foundation, accepted October 2017

7. Hettiarachchi, H.A.C. K. & Mampearachchi, W. K. 2017. Effect of aggregate surface texture, shape and vibration frequency on packing density of binary aggregate mixtures.. Negombo, International Conference on Advancement of highway engineering and transport systems.

8. Hettiarachchi, H.A.C.K. & Mampearachchi, W.K. 2017. Optimization of Aggregates for Sustainable Low Cement Concrete for Interlocking Concrete Block Pavers. Hong Kong, World Sustainable Built Environment Conference. ISBN 978-988-77943-0-1

9. Bandara M.M.H.W., and Mampearachchi W.K. Develop expanded clay as internally cured Concrete Aggregate, 10th  International Conference on Road and Airfield Pavement Technology, Polytechnic University, Hong Kong, August 8-10, 2017

10. W.W. Bandara, W.K. Mampearachchi, K.H.S.M. Sampath, Cement Stabilized Soil as a Road Base Material for use in Sri Lankan Roads Journal Of Engineer,  Institute of Engineers Sri Lanka,  January 2017

11. Bandara M.M.H.W., and Mampearachchi W.K. Development of Expanded Clay as an Internally Curing Concrete Aggregate,Proceedings of Civil Engineering Symposium, Department of Civil Engineering, University of Moratuwa, December 2016

12. Umasangar K. and W.K. Mampearachchi, Study of Permeability Characteristics of Open Graded Friction Courses Used in Wearing Courses, Proceedings of Civil Engineering Symposium, Department of Civil Engineering, University of Moratuwa, December 2016

13. Inan, I. I. I., Mampearachchi W. K. and Udayanga, P.A.S. Effect of Fine Percentage on the Properties of Sub-base Material, Journal Of Engineer,  Institute of Engineers Sri Lanka,  October 2016

14. Ekanayake E. M. C. B. and Mampearachchi W. K. Review of Roundabout Design Standards and the Development of a Roundabout Design Guideline for Sri Lanka, Journal Of Engineer,  Institute of Engineers Sri Lanka,  October 2016

15. H. A. C. K. Hettiarachchi & W. K. Mampearachchi New block design and laying parameters for interlocking concrete block pavements to improve human thermal comfort levels in urban spaces, International Journal of Sustainable Building Technology and Urban Development, May 2016 DOI: 10.1080/2093761X.2016.1172278

16. W. K. Mampearachchi and Herath, H. M. S.M., Engineering Properties of Cement and Lime Stablized Silty Sand in Pavement Subbases, proceedings of the international conference on Geotechnical Engineering, Geotechnics for sustainable Development, Sri Lankan Geotechnical Society, August 10-11, 2015, Colombo

17. Hettarachchi H. A.C.K., and Mampearachchi, W.K. Improved Concrete Mix Design for ICBP using Packing Density Method, Proceedings of the international Conference on Advances in Highway Engineering and Transportation Systems, August 10, 2015 Mount Lavinia Hotel, Colombo, Sri Lanka

18. Jayarathna, K.A.R. N., and Mampearachchi, W.K. Investigation of Road Deterioration using a Mechnanistic Tool Case Study on A10 Road., Proceedings of the international Conference on Advances in Highway Engineering and Transportation Systems, August 10, 2015 Mount Lavinia Hotel, Colombo, Sri Lanka

19. Gunathilake, Dhanushika, and W.K. Mampearachchi Development of Finite Element Model for Concrete Block Paving, Proceedings of the 9th Asia Pasific Conference on Transportation & the Environment, August 6-8, 2014, Colombo Sri Lanka

20. Salawavidana, S. A. S.T., Liyanarachchi, L. A. T. U., Senarathna, R. M. S. K. ,Mampearachchi, W. K. and Bandara, J. M. S. J. Guideline for the Implementation of Bicycle Lanes on Sri Lankan Highways, Proceedings of the 9th Asia Pacific Conference on Transportation & the Environment, August 6-8, 2014, Colombo Sri Lanka

21. Jayarathna, R., and W.K. Mampearachchi Failure Analysis of a Semi Structural Pavement Using a Mechanistic Tool – Case Study for a Provincial Road, Proceedings of the 9th Asia Pacific Conference on Transportation & the Environment, August 6-8, 2014, Colombo Sri Lanka

22. Situnamaluwa, H.* and Mampearachchi W. K. Development of a Polymer Modified Bitumen Specification Based on Empirical Tests – Case Study for Sri Lanka,  Road Materials and Pavement Design Volume 15, Issue 3, July 2014, pages 712-720

23. WK Mampearachchi, A Senadeera, Determination of the Most Effective Cement Concrete Block Laying Pattern and Shape for Road Pavement Based on Field Performance, Journal of Materials in Civil Engineering, Vol 26 (2) 226-232, January 2014

24. W.K. Mampearachchi, Karunaratne, A.M.A.N. Non Dowel Joint Spacing for Low Volume roads in Tropical countries,  International Journal of Pavement Research and Technology, Vol. 7, No. 1 January 2014

25. W. K. Mampearachchi & M. M. D. V. Gunatilake,  A Sustainable Road Construction Material for Low Volume Roads,   FARU International Research Symposium 2013 University of Moratuwa,, Dec 10- 14, 2013,  Hambantota, Sri Lanka

26.W.K. Mampearachchi1*, J.V. Kosgolla and M. Tia, Feasibility of whitetopping pavements for resurfacing thin asphalt, pavements, journal of National Science Foundation, 40(4): 293-302, December 2012

27. W.K. Mampearachchi *, G.S. Mihirani, B.W.P. Binduhewa and G.D.D. Lalithya, Review of asphalt binder grading systems for hot mix asphalt pavements in Sri Lanka, journal of National Science Foundation, 40(4): 311-320, December 2012

28. W.K. Mampearachchi, Fernando P. R. D., Evaluate the Effect of Superpave Aggregate Gradations on Marshall Mix Design Parameters of Wearing Course, the Journal of National Science Foundation of Sri Lanka, No3, September 2012

29. W. K. Mampearachchchi, Suwetha B. and Tharaka, D.G.S., Influence of Plasticity Index on Sub-base Material: Experimental Review, Journal of Engineer , Annual Transaction, Volume 1, Part B, October, 2012

30. Mampearachchi W.K., Jayasuriya W.W.C, Senaratne S.A.M.A.N.I., Sumanathissa R.P.P., Applicability of HCM 2000 to Determine the Level of Service in Urban Arterial Roads, Sri Lanka, Civil Engineering Research for Industry Symposium 2012,

31. Mampearachchi W.K., Dahiyagamuwa T., and  Marasinghe L., . Failure Analysis of a DBST Road Using Mechanistic-Empirical Method Civil Engineering Research for Industry Symposium 2012

32. Mampearachchi W. K., “ Towards a Proper Road Classification System for Economic Development of Sri Lanka, Journal of Economic Review, People’ Bank, April/May 2012

33. W. K. Mampearachchi,  Pilanavithana, U. S., Perera, P. S., and Appuhami, R. S. B. R, Economical Concrete Mix Design for Interlocking Concrete Paving Blocks for Sri Lanka, Journal Of Engineer,  Institute of Engineers Sri Lanka, October 2011

34. W. K. Mampearachchi, and Priyantha, N. A. A. "Development of Guidelines for Low Volume Concrete Road Construction in Sri Lanka" Journal Of Engineer,  Institute of Engineers Sri Lanka,  October 2011

35. Karunaratne, A.M.A.N., Mampearachchi, W. K. and Nanayakkara, S. M. A., Experimental investigation of LTE in relation to crack width of non-dowelled joints in concrete, Journal of Engineer, Annual Transaction, Volume 1, Part B, October, 2011.

36. W. K. Mampearachchi, J. V. Kosgolla And S. M. A. Nanayakkara, Development Of An Economical High Early Strength Concrete Mix For Paving Of Provincial Roads In Sri Lanka, Journal Of Engineer,  Institute of Engineers Sri Lanka, April 2011

37. W. K. Mampearachchi, and Gunasinghe, P.H. G., Effectiveness of Traffic Forecasting on Pavement Designs for Sri Lankans Roads, Journal Of Engineer,  Institute of Engineers Sri Lanka, April 2011

38. W. K. Mampearachchi, T. Janaraj, Analysis of Structural Capacity of Hot Mix Asphalt (HMA) Designs Using Two Pavement Design Guidelines: AASHTO & TRL RN-3, 1, Journal of Engineer, Institute of Engineers Sri lanka, January 2011

39. W. K. Mampearachchi1), Senarath B. Wanigasekara2), Determination Of Optimum Nominal Aggregate Size For Single Surface Dressings, Journal of Engineer, Institute of Engineers Sri lanka, October 2010

40. Mampearachchi W. K. and Gunaratne W. P. H.,” Finite Element Model Approach to Determine Support Conditions and Effective Layout for Concrete Block Paving” Journal of Materials in Civil Engineering- ASCE, October, 2010.

41. V. W. P. Jayasooriya, and M. A. W. Kumara,” Construction and Demolition waste as a Base Material  for Flexible Pavement”, Proceedings of the 14th  Annual Symposium of Engineering Research Unit, University of Moratuwa, Sri Lanka, October 15, 2008

42. J. K. U. Gayani, M. A. W. Kumara,and S. M. A. Nanayakkara,” Construction and Demolition waste For Development of Econocrete for Rigid Pavement Construction”, Proceedings of the 14th  Annual Symposium of Engineering Research Unit, University of Moratuwa, Sri Lanka, October 15, 2008

43. M. A. W. Kumara, J. V. Kosgolla and J. M. S. J. Bandara, “Study the Effectiveness of Traffic Calming Measures (Humps)”, Proceedings of the 14th  Annual Symposium of Engineering Research Unit, University of Moratuwa, Sri Lanka, October 15, 2008

44. Tapia, P., Kumara, M.W., Tia, M., Wu, C.L., and Choubane, B. Evaluation of Composite Pavements Using a Heavy Vehicle Simulator; International Journal of Pavement Research and Technology, Volume 1, Number 1, January 2008, pp. 1-11.

45. M. A. W. Kumara and k. K. C. S. Kannangara, “ Culvert Management System”  Annual Transaction of  Institute of Engineers Sri Lanka,  Volume 01 – Part B, PP 53-62,  2008

46. Patricio Tapia, M. Wasantha Kumara, Mang Tia, and Bouzid Choubane , “Analysis, Testing and Verification of the Behavior of Composite Pavements Using a Heavy Vehicle Simulator” International Workshop on Best Practices for Concrete Pavements, Brazil, October 2007

47. M. W. Kumara, Mang Tia, M. Bergin, and B. Choubane, “Evaluation of Early Strength Requirement of Concrete for Slab Replacement Using Accelerated Pavement Testing,  Journal of Transportation Engineering-ASCE, October 2006  Vol 132 No 10,PP 781-789

48. M. A. W. Kumara, and J. M. S. J. Bandara, “Sustainable and Environment Friendly Approach for Low Volume Road Development” Tenth Annual Forestry and Environment Symposium- University of Sri Jayawardane, Sri Lanka 2-3 Dec 2005

49. Appea, A., Kumara, M.W., Tia, M., Jackson, N.M., Choubane, B., Bergin, M., “Concrete Slab Instrumentation Procedure and  Comparison of Field Measured Responses To Computed Responses,” Proceedings of Fifth International Conference on Road and Airfield Pavement Technology, Seoul, Republic of Korea, 10-12 May 2005

50. M. W. Kumara “Analysis And Verification Of Stresses And Strains And Their Relationship To Failure In Concrete PavementsUnder Heavy Vehicle Simulator Loading” Ph.D. Dissertation, University of Florida, 2005

51. M. W. Kumara, M. Tia, C-L Wu, and B. Choubane, “Analysis of Composite Pavements Under Moving and Static Wheel Loads from a Heavy Vehicle Simulator,” International conference on Best Practices for Ultrathin and Thin Whitetopping Pavement, Denver Colorado, April 2005

52. M. W. Kumara, M. Gunaratne, J. J. Lu, and B. Dietrich, “Methodology for Random Surface-Initiated Crack Growth Prediction in Asphalt Pavements,  Journal of Materials in Civil Engineering-ASCE, March /April , Vol 16, No 2, PP 175-185, 2004

53. M. W. Kumara, Mang Tia, C-L Wu, and B. Choubane, “Evaluation of Applicability of Ultrathin Whitetopping in Florida,  ,Journal of Transportation Research Board, TRR, No 1823, PP 39-46, 2003

54. M. W. Kumara,  M. Gunaratne,  John Lu, and Bruce Dietrich,"Probabilistic Method for Pavement Crack Depth Prediction " a paper accepted for presentation at 81st Annual meeting of Transportation Research Board (TRB), Washington D.C. 2002.

55. S. Meka, M. W. Kumara, R. Pendyala “A Structural Equations Analysis of Withn-Household Activity and Time Allocation Between Two Adults”  a paper accepted for presentation (Poster session) at 81st Annual meeting of Transportation Research Board (TRB), Washington D.C. 2002.

56. M. W. Kumara “Prediction of surface initated crack depth in Asphalt Pavement” Masters Thesis, University of South Florida, 2001

57. Mang Tia, C-L Wu, and M. W. Kumara , “Foronstic Investigation of Ultrathin Whitetopping application at Ellaville Weight Station

58. Mampearachchi W. K. and Senadeera A.,” Determination of The Most Effective Cement Concrete Block Laying Pattern and Shape for Road Pavement Based on Field Performance”  Journal of Materials in Civil Engineering- ASCE, [on press]

59. M. W. Kumara, A. S. Kumarage, J.M.S.J. Bandara, “Development of Road Network Database for Sri Lankan Roads” a paper accepted for presentation and publication at the 54th Anniversary of the Sri Lankan Association for Advancement of Science (SLAAS), 1998

Ongoing Research

ADAPTATION OF MECHANISTIC PAVEMENT ANALYSIS FOR ROAD DESIGNS BASED ON EMPIRICAL DESIGN METHODS

 

Principal Investigator  : Prof. W.K. Mampearachchi, University of Moratuwa

 Co – Investigator        : Prof. Manjriker Gunaratne, University of South Florida                 

 

A mechanistic approach in pavement design focuses on explaining the stresses, strains, and deflections present in a pavement structure. The significant physical causes for such type of phenomena are the material properties of the pavement structure and the pressure exerted on the pavements. A mathematical model is typically utilized to describe the relationship between these phenomena and their physical causes. There are many guidelines given by different organizations such as AASHTO™, AUSTROAD (example:  CIRCLY software) etc. for the development of Mechanistic – Empirical methods in pavement designs. Laboratory conditions are mostly used for the derivation of Mechanistic – Empirical methods and calibrations that are required for field conditions. CIRCLY is one of the mechanistic – empirical models developed based on AUSTROAD, widely used in Australia and New Zealand. But ensuring the reliability and accuracy of using software for local roads improved under TRL Road Note 31 and AASHTO guidelines can be identified as a real world challenge.

 

IMPACT ON THE SOCIETY AND ECONOMY

This research aims on developing a pavement design and a performance evaluation tool in the Sri Lankan development sector, which can be used in future road implementation projects that will be highly appreciated by both contractors and donor agencies of road projects that are in a supply constraint of good materials for construction. This will also be helpful in optimizing the conservative and economical perspective of designs which will reduce material usage and improve available materials to satisfy available designs and evaluate the cost effectiveness of alternative methods that are traditionally rejected due to the expected cost being high.

 

FUNDING SOURCE

National Research Council (NRC) – Sri Lanka

Figure 1: Severe rutting in a flexible pavement

Figure 2: Very severely fatigued cracked pavement

Report by Piyumee Kaushalya Premarathne

 

 

Modeling of interface bonding of the bituminous pavement layers

Principal Investigator           : Prof.W.K.Mampearachchi

 

INTRODUCTION

Bonding strength of the bituminous pavement layers is one of the most significant functions for durability and functional level of pavements. Generally, tack coat is used as the bonding agent in-between two bituminous layers; (1) wearing course and (2) binder course. Although specifications have provided a range for the rate of application of tack coats, there are some concerns about the application rate and the need of bitumen layer as a bonding agent. There are some advanced test methods and test conditions that have been proposed for the optimization of the tack coat for HMA placement in NCHRP Report 712. Findings of previous research indicate that, application rate of the tack coat, surface roughness and texture of the bonding layers, emulsion breaking time and placing temperature of wearing course, can be identified as the most influential variables. . However, not enough studies are conducted to estimate the performance level of the interface bonding under various conditions. In this study a model will be developed to estimate the performance level of the interface bond.  

IMPACT ON THE SOCIETY AND THE ECONOMY

A loss of bond between HMA layers can cause crescent-shaped slippage cracks or debonding to occur, leading to reduced pavement life. Those issues certainly affect the road users, especially drivers. The fig 1 and fig 2 below shows the distresses occured in roads due to the poor bonding strength of bituminous layers. 

Because many road accidents happen due to the poor conditions of some roads in Sri Lanka, the society losses a number of people and the government losses a huge amount of money in the treatment of  those subjected to accidents. Both of them are a loss to the economy of Sri Lanka. Therefore, this research focuses on optimizing the road construction methods..         

 

 FUNDING SOURCE

Vehicle Emission Testing Fund – Sri Lanka (Partially)

 

Figure 1 Damage Road due to poor interface bonding.

Report by Osanda Muthuhewa

 

 

DEVELOPMENT OF LOCALLY AVAILABLE MATERIAL FOR INTERNALLY CURING CONCRETE APPLICATIONS IN TROPICAL AND SUBTROPICAL COUNTRIES

Principal Investigator; prof. W.K Mampearachchi.

 

INTRODUCTION

Internal curing concrete has emerged as a new construction technology which can be adopted as an alternative solution to the problem of external curing. It is also a practical method of distributing additional water throughout the concrete mixture which is a critical factor in the cement hydration process. This will introduce a fast construction technique for the concrete construction industry because, it eliminates the conventional curing process. Thus, it will save the time, money, resources and labor hours involving the construction process. Internal curing increases the quality and strength of concrete. It can be done using pre-wetted aggregate as internal water reservoirs. However, no research is being conducted yet, to study the suitability of internal curing technology for local road construction industry.

Figure 1 shows the different between conventional curing and the internal curing. According to this we can understand conventional curing is no effective one because it will not provide water throughout the concrete.  

Figure 1; internal curing process

                           

IMPACT ON THE SOCIETY AND THE ECONOMY

Through this research, suitability of internal curing concrete for local road construction was studied and the suitable internal curing aggregate has been identified. Study showed that potential of producing these types of aggregates using locally available clay resources. Thus, this study will introduce a new aggregate to the concrete construction industry, replacing a considerable amount of river sand which is presently used in vast quantities and is facing scarcity. Major impact of this study is that external curing of concrete is not required. Use of internally curing aggregate increase the strength and durability of concrete without increasing the cement content in the concrete.

 

FUNDING SOURCE

Senate Research Council, University of Moratuwa

Report by Hasitha Bandara

 A THEORETICAL PACKING MODEL TO DETERMINE THE OPTIMUM AGGREGATE COMPOSITION IN INTERLOCKING CONCRETE BLOCK PAVERS

 Principal Investigator; prof. W.K Mampearachchi.

 

INTRODUCTION

Development of theoretical particle packing models have been widely discussed through last few decades. Achieving high strength concrete without compromising high amount of cement or binder is the main idea of particle packing models. Researchers have been studying the behavior pattern of aggregate in a mixture to minimize the voids content which needs to be filled with cement so that more compacted, high strength concrete can be achieved through systematically mixing different particle sizes. Toufar model, De larrad models, Standish and Yu model, Kwan and Wong model are some of the main particle packing models used for the normal concrete mixtures. But ICBP manufacturers use a zero-slump concrete. To cast the block a vibration and compaction is also applied. Hence use of above mentioned particle packing models is not suitable for ICBP. Therefore, development of a theoretical packing model suitable for ICBP is a major requirement. The packing model which incorporates compaction and vibration effects will be helpful in manufacturing high quality blocks without applying too much vibration and compaction. Also, the packing model will provide optimum aggregate ratio for the ICBP. Hence material wastage will be minimized which will lead to reduce the cost of manufacturing.

IMPACT ON THE SOCIETY AND THE ECONOMY

ICBP industry is one of the most emerging small industries in Sri Lanka. According to ministry of highways 90% of the rural roads have been paved using ICBP. Hence to cater the demand, a number of local manufacturers have started production factories. But the quality of those products is highly questionable. Block manufacturers use a trial and error process to achieve required strength. This process may lead to high variation of strengths in blocks. Even though the quality of the blocks is assured by SLS 1425 part I and II there are no documents available for block manufacturers to refer to how to achieve the required quality. One of the main problems in Sri Lanka is the variation of quality in paving blocks. Variation of strength of blocks within the same batch is evident. This is mainly due to lack of information and knowledge regarding the production technics of ICBP. Block manufacturers are not aware of mix design practices and methods.   Material wastage, High usage of cement, over compaction are some of the related issues faced by manufacturers.

This research will provide proper guidelines for block manufacturers to overcome above mentioned difficulties and produce high quality blocks. The research aims to reduce the block price through reducing the excess material usage. Ultimately the cost of rural road construction using ICBP will be more feasible. Findings of this research will be used to regulate the local block manufacturing industry. Outcomes of this research will be helpful to construct high quality rural roads with lesser cost.

 

FUNDING SOURCE

Senate Research Council, University of Moratuwa

Figure 1: Production of ICBP using improved mixture design method 

Report by Chamod Hettiarachchi

Identification of interconnected voids in an Open Graded Friction Course layer by Digital Image Processing

Principal Investigator        : Prof.W.K.Mampearachchi

 

Open Graded friction course (OGFC) is generally paved as a wearing course to improve road safety through enhancing skid resistance and roadway visibility by reducing hydroplaning, splash, and spray. However, OGFC should be analyzed to improve performance and durability which can be adopted to the selected environment. This research carries out an experimental digital image processing technique to model the interconnected void structure of OGFC of Asphalt concrete (AC) from raw photographs captured through DSLR photography. Cylindrical shaped samples are formed using a Superpave Gyratory Compactor and then subjected to a solidifying liquid insertion process to spot the interconnected porous structure. Cross-sections of OGFC sample sliced by a diamond cutter are photographed and fed with the exact orientations with respect to the cores. Analysis of boundary lines between air voids-bitumen, interconnected voids- bitumen and bitumen-aggregate are carried out for various compositions of OGFC samples. Modeling the 3D structure of interconnected voids via the color of hardened liquid agent will be finally concluded. Image processing tools of MATLABe are made use of in several steps to enhance photographs to achieve the volumetric properties in synchronism with measured volumetric properties in an iterative manner. All the Photographs are enhanced to the same standard with several adjustments implemented in the beginning. The iterative method proposed is carried out in identifying boundaries of air voids-bitumen, interconnected voids- bitumen and aggregate- bitumen through image analysis, edge detection and segmentation to achieve the final separation. Interconnected pores and pore diameters are then estimated for the selected OGFC mixtures through image processing of slices obtained from core samples taking into account the meandering nature of the pores. Finally, requirements for interconnectivity of the pores are established based on permeability measurements of the OGFC mixtures.

 

IMPACT ON THE SOCIETY AND ECONOMY

 When OGFC is developed as an asphalt layer, the requirement of OGFC narrow to achieve a higher performance in roads which consist with specific limits such areas with high rainfall density, less human movements on roads and roads which require high speeds. As the advantages mentioned in the above paragraph, OGFC is suitable for the expressways in high rainfall intensities. OGFC is usually paved as a wearing layer (layer which is at the top). However, the cost of OGFC is usually around 40% higher than regular wearing courses just after the paving stage. When it comes to achieving structural capacity, it’s around 60%. When it comes to the use, OGFC needs higher maintenance than regular roads. But with the right use of OGFC, accidents due to the rain can be reduced and also the speed limits can be increased in wet situations (currently speed limit is below 60 km/h at wet conditions in Sri Lankan Expressways). With the reduction of accidents in expressways, OGFC can use to save money. With the time, OGFC will be more economical than regular asphalt due to less number of accidents. This will increase the safety of passengers and other parties who can became victims of the accidents. Therefore, with the development of world, improving OGFC could be a part of recognizing ways to improve technological development to move forward with the other countries.

 

 

FUNDING SOURCE

Senate Research Council (SRC) – University of Moratuwa, Sri Lanka

 

 Figure 1: OGFC and regular asphalt at a wet situation

 

 Figure 2: Close up view of an open graded friction courses

 

Report by K. V. Dedigamuwa