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Development of a treatment technique to reduce the water absorption capacity of recycled aggregates

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dc.contributor.author Madawa, WKA
dc.contributor.author Rathnayake, RMSIB
dc.contributor.author Wijethunga, DB
dc.contributor.author Gamage, TC
dc.contributor.author Karunarathne, S
dc.contributor.editor Hemalal, PVA
dc.date.accessioned 2022-07-26T05:28:25Z
dc.date.available 2022-07-26T05:28:25Z
dc.date.issued 2015-07
dc.identifier.citation Madawa, W.K.A., Rathnayake, R.M.S.I.B., Wijethunga, D.B., Gamage, T.C., & Karunarathne, S. (2015). Development of a treatment technique to reduce the water absorption capacity of recycled aggregates. In P.V.A. Hemalal (Ed.), Proceedings of the 9th Annual ERE Research Conference on Earth Resources Management (pp. 52-57). Department of Earth Resources Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/18456
dc.description.abstract This study was to find a treatment technique to reduce the water absorption of Recycled Aggregates (RA) which involved preparing a coating to reduce the water penetration. The materials considered for the preparation of coating was Termite Mound Soil (TMS) and ordinary Portland cement. The objective was to find their optimum proportions and the slurry thickness for a coating that gives the lowest absorption. TMS was tested for pozzolanic properties. Chemical composition was tested using Atomic Absorption Spectroscopy and other analytical techniques. Water absorption, particle size distribution, AIV, LAAV of RA was tested to ensure the suitability for construction purposes. Slurries were prepared using cement replacement levels of 0, 20, 40, 60 and 80% of TMS. Three sets of coatings were prepared with water to solid ratios of 1, 1.25 and 1.5. Slurries were prepared in a concrete mixture in which the aggregates were coated for 10 minutes at a speed of 30rpm. After air drying, coated aggregates were tested for the absorption after 14 days. The absorption of treated aggregates was compared with those of natural and untreated recycled aggregates. Aggregates Coated using 50% cement and 50% TMS showed a significant reduction in the water absorption up to 38.44%. en_US
dc.language.iso en en_US
dc.publisher Department of Earth Resources Engineering en_US
dc.subject Coating en_US
dc.subject Recycled aggregates en_US
dc.subject Termite mound soil en_US
dc.subject Water absorption en_US
dc.title Development of a treatment technique to reduce the water absorption capacity of recycled aggregates en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2015 en_US
dc.identifier.conference 9th Annual ERE Research Conference on Earth Resources Management en_US
dc.identifier.place Katubedda en_US
dc.identifier.pgnos pp. 52-57 en_US
dc.identifier.proceeding Proceedings of the 9th Annual ERE Research Conference on Earth Resources Management en_US
dc.identifier.email shiromi@yahoo.co.uk en_US


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