成人头条

Construction Materials and Methods

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The Construction Materials & Methods Team focuses on a range of materials for construction of structural and non-structural elements along with numerous construction technologies. Further to analyzing the performance of conventional construction materials, we are interested in inventing green materials for load bearing and non-structural applications that can improve the thermo-mechanical performance of the buildings. Mud Concrete, Cement stabilized earth, timber, aerated concrete, and bamboo are some of the novel materials currently explored by our team. Another key area that is presently being focused is retrofitting of structures against extreme forces of nature. Our team uses a numerical modeling approach to analyze the thermal and mechanical behaviour of the developed materials and its applications.

PUBLICATIONS
JOURNALS
  1. Ariyaratne, K.P.I.E., Jayasinghe, C., Jayasinghe, M.T.R. and Walker, P. (2020) 鈥楢ssessment of Seismic Performance of Earth masonry with Shaking Table Tests and Finite Element Modelling鈥, MI Journal, 32.
  2. Platt, S.L., Erandi, I., Jayasinghe, C., Jayasinghe, M.T.R., Maskell, D., Ranasinghe, G. and Walker, P. (2020) 鈥 Improving the lateral load resistance of vernacular masonry walls subject to flooding鈥, in Construction Materials. ICE Publishing, pp. 12.
  3. Nandapala, K., Chandra, M.S. and Halwatura, R.U. (2020) 鈥楢 study on the feasibility of a new roof slab insulation system in tropical climatic conditions鈥, Energy and Buildings, 208, pp. 1-22.
  4. Mendis, M.S., Rajapaksha, M. and Halwatura, R.U. (2020) 鈥楿nleashing the Potentials of Traditional Construction Technique in Bio-climatic Building Designs: A case of Ambalam, Sri Lanka鈥 International Journal of Environmental Science and Development, 11(6), pp. 298-304.
  5. Chandra, M.S., Nandapala, K., Weerasinghe, K.A.B., Priyadarshana, G., Liyanarathne, B.K.S.W. and Halwatura, R.U. (2019) 鈥楢n engineering approach towards the traditional beliefs in house construction鈥, Asian Journal of Civil Engineering, 21, pp. 367-380.
  6. Chandra, M.S., Nandapala, K. and Halwatura, R.U. (2020) 鈥楧eveloping a durable thermally insulated roof slab system using bamboo insulation panels鈥, International Journal of Energy and Environmental Engineering, 10, pp. 511-522.
  7. Mendis, M.S., Halwatura, R.U., Somadeva, D.R.K., Jayasinghe, R.A. and Gunawardana, M. (2019) 鈥業nfluence of timber grain distribution on orientation of saw cuts during application: Reference to heritage structures in Sri Lanka鈥, Case Studies in Construction Materials, 11. Pp. 1-18.
  8. Galabada, G.H., Rajapaksha, M., Arooz, F.R. and Halwatura, R.U. (2019) 鈥業dentifying the Impact of Concrete Specimens Size and Shape on Compressive Strength: A case study of Mud Concrete鈥, Engineering, Technology & Applied Science Research, 9(5), pp.4667-4672.
  9. Galabada G.H., Rajapaksha. M. and Halwatura, R.U. (2019) 鈥業dentifying the impact of specimen鈥檚 size and shape on compressive strength; a case of mud concrete鈥 Engineering, Technology & Applied Science Research, 9(5), pp. 4667-4672.
  10. Jayasinghe, M.T.R. and Jayasinghe, C. (2018) 鈥楽emi-tiered housing for laterite earth sloping 鈥 A sustainable solution with alternative materials and methods鈥, Journal of Green Building, 13(1), pp. 56-72.
  11. 听Jayasinghe, C., Jayasinghe, M.T.R., Dissanayake, B. and Jayathilake, D. (2018) 鈥楿se of Recycled Building Demolition waste stabilized rammed earth鈥, Journal of International Masonry Society, 31(1), pp. 17-26.
  12. Udawattha, C., De Silva, D.E., Galkanda, H. and Halwatura, R.U. (2018) 鈥楶erformance of natural polymers for stabilizing earth blocks鈥 Materialia, 2, pp. 23-32.
  13. Herath, H., Halwatura, G.Y. and Jayasinghe, G.Y. (2018) 鈥楳odeling a tropical urban context with green walls and green roofs as an ruban adaptation strategy鈥, Procedia Engineering, 212, 691-698.
  14. Arooz, F.R. and Halwatura, R.U. (2018) 鈥楳ud-concrete block (MCB): mix design & durability characteristics鈥 Case Studies in Construction Materials, 8, pp. 39-50.
  15. Udawattha, C., Galabada, H. and Halwatura, R.U. (2018) 鈥楳ud concrete paving block for pedestrian pavements鈥 Case Studies in Construction Materials, 7, pp. 249-262.
  16. Udawattha, C. and Halwatura, R.U. (2017) 鈥楲ife cycle cost of different Walling material used for affordable housing in tropics鈥 Case Studies in Construction Materials, 7, pp. 15-29.
  17. Udawatthda, C. and Halwatura, R.U. (2017) 鈥楪eopolymerized self-compacting mud concrete masonry units鈥 Case Studies in Construction Materials, 9, pp. 1-10.
  18. 听Fernando, P.L.N., Jayasinghe, M.T.R. and Jayasinghe, C. (2017) 鈥楢 structural feasibility of Expanded Polystyrene (EPS) based lightweight concrete sandwich wall panels鈥, Construction and Building Materials, 139, pp. 45-51.
  19. 听Dissanayake, D.M.K.W., Jayasinghe, C. and Jayasinghe M.T.R. (2017) 鈥楢 Comparative embodied energy analysis of a house with recycled expanded polystyrene (EPS) based foam concrete wall panels鈥 Energy and Buildings, 135, pp. 85-94.
  20. Kariyawasam, K.K.G.K.D. and Jayasinghe, C. (2016) 鈥楥ement stabilized rammed earth as a sustainable construction material鈥, Construction and Building Materials, 105, pp. 519-527.
  21. Jayasinghe, C., Fonseka, W.M.C.D.J. and Abeygunawardene, Y.M. (2016) 鈥楲oad bearing properties of composite masonry constructed with recycled building demolition waste and cement stabilized rammed earth鈥, Construction and Building Materials, 102, pp. 471-477.
  22. Udawattha, C. and Halwatura, R.U. (2016) 鈥楾hermal performance and structural cooling analysis of brick, cement block, and mud concrete block鈥 Advances in Building Energy Research, 12(2), 1-14.
  23. Nandapala, K. and Halwatura, R.U. (2016) 鈥楧esign of a Durable Roof Slab Insulation System for Tropical Climatic Conditions鈥 Cogent Engineering, 3(1), 1-17.
  24. Udawattha, C. and Halwatura, R.U. (2016) 鈥楨mbodied Energy of Mud Concrete Block (MCB) Versus Brick and Cement Blocks鈥 Energy and Buildings, 126, pp. 28-35.
  25. Jayasinghe C. and Perera, T.M. (2015) 鈥楧ispersion Model for VOC emissions from solvent based paints鈥, International Journal of Engineering, 4, pp. 44-56.
BOOKS
  1. Nandapala, K., Chandra, M.S. and Halwatura, R.U. (2018) 鈥楻oof Slab Insulation System for Tropical Climatic Conditions鈥 LAMBERT 成人头条 Publishing, ISBN: 978-613-9-98025-3.
  2. C. Jayasinghe,听 鈥淪tructural Design of Earth Buildings鈥, published in collaboration with Eco Ceylon Limited, Sri Lanka, 119 pages, 2009. (ISBN 978-955-51805-0-4).
CHAPTERS
  1. Kharoti, I., Walker, P. and Jayasinghe, C. (2019) 鈥楧urability of Rammed Earth: A Comparative Study of Spray Erosion Testing and Natural Weathering鈥, Springer Transactions in Civil and Environmental Engineering. Springer, Singapore, pp. 319-332.
  2. Ariyaratne, K.P.I.E. and Jayasinghe, C. (2019) 鈥楢lternative Methods in Numerical Modelling of Earth Masonry Under Seismic Loading鈥, Springer Transactions in Civil and Environmental Engineering. Springer, Singapore, pp. 305-318.
  3. Udawattha, C. and Halwatura, R.U. (2018) 鈥楢lternative Stabilizer for Mud Concrete鈥 Cement Based Materials, 10, pp. 1-22.
CONFERENCE PROCEEDINGS
  1. Gunawardhana, S.A.A., Galkanda, G.A.H.H. and Halwatura, R.U 鈥業nvestigation of Fungus Growth and Moss Growth on Different Wall Care Putty Materials Along with Different Walling Materials鈥, in Moratuwa Engineering Research Conference (MERCon), Moratuwa, 2020. pp. 96-101.
  2. Galabada, H., Galkanda, H., Dharmaratne, P.D. and Halwatura, R.U. 鈥業nvestigation of Mechanical Properties of Mud Concrete with Coconut Fiber Reinforcement鈥, in Moratuwa Engineering Research Conference (MERCon), Moratuwa, 2020, pp. 102-106.
  3. Sudeshika, D.M.P., Mendis, M.S. and Halwatura, R.U. 鈥業nvestigation on the Mechanical Property variation on timber caused due to the Thermal and Chemical Modification鈥, in Moratuwa Engineering Research Conference (MERCon), Moratuwa, 2020, pp. 78-83.
  4. Suluxan, S., Nanayakkara, I., Arooz, R. and Halwatura, R.U 鈥楢 Preliminary Study on Fabric Formwork for a Mud-Concrete Slab System鈥 in Moratuwa Engineering Research Conference (MERCon), Moratuwa, 2020, pp. 84-89.
  5. Muthukumara, S.A.U.R., Jayasinghe, G.Y. and Halwatura, R.U. 鈥榃ild Grass Types as Green Roofing Materials for Urban Landscapes in a Tropical Climate鈥, in Proceedings of the 24th International Forestry and Environment Symposium, Jayawardenepura, 2019.
  6. Dissanayake, D.M.N.A., Mendis, M.S., Halwatura, R.U. and Jayasinghe, G.Y. 鈥業nvestigation on Chemical insertion and physical property changes of sunken timber; Terminalia arjuna along with River water in Sri Lanka鈥, in International Symposium on Agriculture & Environment, Ruhuna, 28th February 2019, pp. 20.
  7. Mendis, M.S. and Halwatura, R.U. 鈥楧ecoding the societal on environmental innovation under vernacular timber construction practice in Sri Lanka鈥, in 2019 From Innovation to Impact (FITI), Colombo, 22nd November 2019.
  8. Mendis, M.S., Arooz, R. and Halwatura, R.S. 鈥楤eing Innovation Through Mud-concrete (MC) Technology鈥, in 2019 From Innovation to Impact (FITI), Colombo, 22nd November 2019.
  9. Galabada, H. and Halwatura, R.U. 鈥楢 preliminary study on the use of soil as a floor finishing material鈥, in 2019 From Innovation to Impact (FITI), Colombo, 22nd November 2019.
  10. Jayasinghe, G.Y. and Halwatura, R.U. 鈥楿tilization of Sustainable Timber Materials for Innovative Green Building Solutions鈥 in the International Research Conference of Uva Wellassa University, Sri Lanka, 2019.
  11. Jayasinghe, R.R., Nanayakkara, K.I.U., Arooz, F.R. and Halwatura, R.U. 鈥楥atalan Vault Inspired Earthen Slab System for Houses in Sri Lanka: Form-Finding鈥 in International Research Symposium, Sri Lanka, 2019, pp. 8-13.
  12. Sudeshika, D.M.P., Mendis, M.S. and Halwatura, R.U. 鈥楢 study on mostly abundantly utilized timber for structural application in Sri Lanka鈥 FARU - 12th International Research Conference, Colombo, 2019, pp. 107-114.
  13. Mendis, M.S., Rajapaksha, M. and Halwatura, R.U. 鈥楿nleashing the potentials of traditional construction technique in bio-climatic building designs; a case of Ambalam, Sri Lanka鈥 in 4th Asia Conference on Environment and Sustainable Development (ACESD), Japan, 9th to 11th November, 2019.
  14. Galabada, G.H., Rajapaksha, M. and Halwatura, R.U. 鈥楶aving Materials for Urban Heat Island Mitigation in Tropics; A Comparative Study On Mud Concrete Paving鈥, in, 4th Asia Conference on Environment and Sustainable Development (ACESD), Japan, 9th to 11th November, 2019.
  15. Janaka, K.G., Jayasinghe, C. and De Silva, G.T.R. 鈥楻esource optimization with the use of precast slab system鈥, in International Conference on Civil Engineering Applications鈥, Sri Lanka, 2019.
  16. 听Ranasinghe, R.M.G.B. and Jayasinghe, C. (2019) 鈥楾hermal performance of aerated concrete block鈥, in International Conference on Civil Engineering Applications鈥, Sri Lanka, 2019.
  17. Sampath, O.M.D.P. and Jayasinghe, C. 鈥楨nhancement of lateral load resistance of earth walls with GFRP retrofitting鈥 in International Conference on Civil Engineering Applications鈥, Sri Lanka, 2019.
  18. Jayasinghe, M.T.R., Kariyawasam, K.K.G.K.D. and Jayasinghe, C. 鈥楥ost effective building systems for rapid construction in tropical climates鈥, in 7th International Conference on Sustainable Built Environment (ICSBE2016), 16-18 December 2016, Kandy, pp. 119-123.
  19. Galabada, H. and Halwatura, R.U., 鈥楶erformance of paving materials in outdoor landscaping鈥, in Proceedings of the 9th International Conference on Sustainable Built Environment (ICSBE), Kandy, Sri Lanka, 13th 鈥 15th December 2018.
  20. Liyanarathne, B.L.S.W., Ranasinghe, W.M.N.D. and Halwatura, R.U. 鈥楩orm development of clay module for optimize evaporative cooling with wind flow鈥 in 11th International Research Conference, Sustainability for people 鈥 envisaging multi-disciplinary solutions, Moratuwa, Sri Lanka, 2018.
  21. Galkanda, H., Udawattha, C. Halwatura, R.U. 鈥業mprove intrinsic properties of walling materials to create occupant comfort鈥 in 11th International Research Conference, Sustainability for people 鈥 envisaging multi-disciplinary solutions, Moratuwa, Sri Lanka, 2018.
  22. Arooz, F.R., Perera, T.H., Chandra, M.S. and Halwatura, R.U. 鈥楨xperimental investigation on the optimal lifting height of a self-compacting in-situ cast mud-concrete load-bearing wall segment鈥 in 11th International Research Conference, Sustainability for people 鈥 envisaging multi-disciplinary solutions, Moratuwa, Sri Lanka, 2018.
  23. Nandapala, K., Chandra, M.S. and Halwatura, R.U. 鈥楨ffectiveness of a discretely supported slab insulation system in terms of thermal performance鈥 in 11th International Research Conference, Sustainability for people 鈥 envisaging multi-disciplinary solutions, Moratuwa, 2018.
  24. Dissanayake, D.M.N.A., Mendis, M.S., Jayasinghe, G.Y. and Halwatura, R.U. 鈥楶ossible cellular structural and chemical changes of timber under water鈥 in International forestry and environment symposium, Sri Jayawardanapura, 2018.
  25. Galkanda, G.A.H.H., Udawattha, C, Jayasinghe, G.Y. and Halwatura, R.U. 鈥楥omparative study of fungal and moss growth effect on different walling materials in tropics鈥 in Wayamba International Conference, Wayamba, Sri Lanka, 2018.
  26. Udawattha, C., Akmeemama, L. and Halwatura, R.U. 鈥楩ly Ash-based Geopolymer Mud Concrete鈥 in 4th International Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 2018.
  27. Udawattha, C., Galkanda, H. and Halwatura, R.U. 鈥楽tudy on Natural Rain Surface Erosion of Different Walling Materials in Tropics鈥 in 4th International Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 2018.
  28. Udawattha, C., Halwatura, R.U. 鈥楿se of fly ash as alternative stabilizer for Mud Concrete Block鈥, in the Annual International Research Conference of General Sir John Kotelawa Defence University, 2017.
  29. Udawattha, C., Halwatura, R.U. 鈥楥haracter of Lime as an Alternative Stabilizer to Improve the Long-Term Strength of Mud Concrete Block鈥 in 8th International Conference on Structural Engineering and Construction Management (ICSECM2017), Kandy, Sri Lanka, 2017.
  30. Udawattha, C., Jayasinghe, D. and Halwatura, R.U. 鈥業nvestigation of bottom ash as alternative stabilizer for Mud Concrete Block鈥 in the Annual International Research Conference of General Sir John Kotelawa Defence University, 2017.
  31. Bandara, D.M.H., Arooz, F.R. and Halwatura, R.U. 鈥楨ffect of Gravel size on strength of Mud-Concrete鈥 in Civil Engineering symposium of 成人头条, Moratuwa, Sri Lanka, 2017.
  32. Arooz, F. R., Udawattha, C. and Halwatura, R. U. 鈥楥ommunity empowerment through Mud-Concrete technology Sustainable building techniques to revitalize the war victim communities in Batticaloa, Sri Lanka鈥 in World Sustainable Built Environment Conference , 17, Hong Kong, Construction Industry Council and Hong Kong Green Building Council Limited, 2017.
  33. Arooz, F. R., Babilegedara, T. D. and Halwatura, R. U. 鈥楨ffect of Aggregate Percentage on Compressive Strength of Self-Compacting In-Situ Cast Mud - Concrete Load Bearing Walls鈥 in 3rd International Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 2017.
  34. Bandara, B.V.D., Arooz, F.R. and Halwatura, R.U. 鈥業nvestigation of thermal optimization of Mud-Concrete鈥 in Civil Engineering symposium of 成人头条, Moratuwa, Sri Lanka, 2016.
  35. Udawattha, C. and Halwatura, R.U. 鈥楥omparative Study of Embodied Energy in Different Walling Materials鈥 in Proceedings of the International Forestry and Environment Symposium, Sri Jayawardenapura, Sri Lanka, 2016.
  36. Udawattha, C., Arooz, F.R. and Halwatura, R.U. 鈥楴ew earth walling material: Integrating modern technology into ancient mud wall鈥 in Proceedings of the 7th International Conference on Sustainable Built Environment, Kandy, Sri Lanka, 16th to 18th December 2016.
  37. Udawattha, C., Arooz, F. R. and Halwatura, R. U. 鈥楨nergy Content of walling materials- A comparison of Mud Concrete Blocks, Bricks Cabook and Cement Blocks in Tropics鈥 in Proceedings of the 7th International Conference on Sustainable Built Environment, Kandy, Sri Lanka, 16th to 18th December 2016.
  38. Arooz, F. R., & Halwatura, R. U. 鈥楳ud-Concrete Block - A sustainable building material for green construction in developing countries鈥 in National Green Conference of University of Kelaniya, Kelaniya, 2016.
  39. Udawattha, C., Arooz, F. R. and Halwatura, R. U. 鈥楳anufacturing framework and cost optimization for Building Mud-Concrete Blocks. In Science for the people鈥 in Mobilizing Modern Technologies for Sustainable Development in Asia, Colombo, Sri Lanka, 2016. pp. 326鈥331.
  40. Suja, A.C.A. and Halwatura, R.U. 鈥楧eveloping a Mud block for load bearing wall with 10% cement and low fines content鈥 in International Moratuwa Engineering Research Conference (MERCon), Moratuwa, Sri Lanka, 5th to 6th April, 2016.
  41. Dissanayake, D.M.K.W. and Jayasinghe. 鈥楨mbodied Energy Analysis of a Pre-cast building system鈥, in 6th International Conference on Structural Engineering and Construction Management, Kandy, 2015, pp. 185-191.
  42. Fernando, P.L.N. and Jayasinghe, C. 鈥楽tructural feasibility of a pre-cast building system鈥, in 6th International Conference on Structural Engineering and Construction Management, Kandy, 2015, pp. 181-186.
  43. Fonseka, R., Baskaran, K. and Ekanayake, L.L. (2014). 鈥楽tudy on Waterproofing Methods Used for Concrete Slabs鈥. In Proceedings of Civil Engineering Research Symposium, Sri Lanka.
THESES
  1. Ranasinghe, R.M.G.B. (2020) 鈥楻etrofitting of walls as a flood resistance measure in masonry houses鈥
  2. Arooz. F.R. (2019) 鈥業n-situ Mud-Concrete as a material for load-bearing walls and sustainable building practices.
  3. Wanniarachchi, C. (2018) 鈥業nfluence of incompetent people to structural designs of houses, its impact on structural failures and ways to overcome in the context of house construction Industry in Sri Lanka鈥.
  4. Janaka, K.G. (2018) 鈥楻esource Optimization with the use of Precast Slab System鈥.
  5. Kulatunga, D.D.C.D. (2018) 鈥楨ffectiveness of using roller bit buckets to minimize ground vibration generation in bored piling鈥.
  6. Jaysinghe, T.W.A.S.L. (2018) 鈥楾he Effectiveness of Building Information Modeling & Sri Lankan Construction Industry鈥.
  7. Bandaranayake, B.M.S.D. (2018) 鈥楳ud Concrete as an Alternative Paving Material鈥

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PATENTS
  1. Mud concrete block - Patent No: 17616
  2. Mud paving block - Patent No: 17803
  3. Self-compacting in-situ mud-concrete load bearing wall system - Patent No: 18762
  4. Modular Formwork system for in-situ cast walls made out of self compacting soil-based materials - Patent No: 18879
  5. Rubber stabilized earth block for load bearing walls - Patent no: 19379
  6. Fly Ash stabilized self-compacting earth blocks for load bearing walls - Patent no: 19495
  7. Geo Polymerized self-compacting mud block 鈥 Patent No: 19567
ONGOING RESEARCH
  1. Structural behavior of the doubly curved shell structure using Mud-Concrete (MC)
  2. Decoding the potentials of vernacular timber preservation technology for structural application.
  3. Development of soil based flooring material for tropics.
  4. A dynamic clay wall panel system for indoor cooling.
  5. Development of Soil Based Wall Putty for Tropics.
  6. Development of a composite partitioning wall panel using Coconut Fiber reinforced polymer composite.
  7. Embodied Energy, Embodied Carbon and Cost analysis for the Roofing materials available in Sri Lanka.
  8. In-situ Mud-Concrete as a material for load-bearing walls and sustainable building practices.
PROJECTS
  1. Constructing 750 houses using Mud Concrete Block in North East funded by European Union, Sri Lanka, 2017.
INTERNATIONAL COLLABORATIONS
  1. Prof. (Mrs.) C. Jayasinghe, Sri Lankan collaborator for the Global Challenges Research Fund Networking Grant United Kingdom, for 鈥淓nhanced Earth based building materials network for housing targeted the low income population (Earth4Nest) in March 2018 (successfully completed) with University of Bath, United Kingdom.
INDUSTRIAL COLLABORATION
  1. Dr. L.L. Ekanayake has provided technical expertise on leak repairing, sealing and renovation at Water Treatment Plant in Ambathale, Ibbankatuwa Dam in Dambulla, Labugama Reservoir Intake Dry well and tanks of NWSDB in Katugasthota.
  2. Dr. L.L. Ekanayake has delivered technical expertise on waterproofing work in White Ways Building (Central Bank) and Gaffor Building in Colombo.
  3. Dr. L.L. Ekanayake has provided technical expertise on concrete crack repair injection work in Victoria, underwater crack injection work in the sluice tower of Senanayake Samudraya and renovation on washed concrete in Minipe Left Bank Channel gated structures and Heenganga aqueduct.
  4. Technical expertise for renovation of roof slab insulation work at Galadari Hotel, Colombo.
CONTRIBUTION TO NATIONAL DEVELOPMENT
  1. Prof. (Mrs.) C. Jayasinghe has developed the Green labelling framework for building materials in collaboration with Construction Industry Development Authority (CIDA)
  2. Prof. (Mrs.) C. Jayasinghe has introduced construction waste as a building material in collaboration with National Building Research Organization (NBRO)
  3. Cement stabilized rammed and compressed stabilized earth sustainable materials were introduced by Prof. (Mrs.) C. Jayasinghe after a comprehensive research programme with international collaborations.
  4. Prof. (Mrs.) C. Jayasinghe carried out detailed research on alternative building materials including compressed straw panels (Durra), micro concrete roofing tiles, chipped concrete roofing tiles and precast building systems which resulted in widespread use of such sustainable materials in large projects. The outcome of the research paved the way to obtain the government approvals for such materials.
  5. Prof. (Mrs.) C. Jayasinghe has drafted the Sri Lanka Standards (SLS) for Compressed Stabilized Earth Blocks (CSEB) (SLS 1382: 2009; Parts 1, 2, and 3)

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