Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 47, Issue -, Pages 1532-1538Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2013.06.043
Keywords
Mortar; Glass Reinforced Plastic waste; Recycling; Durability
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Funding
- Italian Interuniversity Consortium on Materials Science and Technology (INSTM) at ACBM
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The viability of improving some durability aspects of mortars through the addition of low dosages of very fine Glass Reinforced Plastic by-product was investigated. Replacing 5-10% of sand volume with GRP dust delays the setting time of cement paste, but the delay can be partially recovered by adopting a previously thermally treated GRP dust. GRP dust increases the workability, autogeneous shrinkage, deformability and total porosity of mortars, though with a smaller average radius. It significantly reduces the mechanical performance of mortars when wet curing conditions are adopted. However, the risk of cracking induced by restrained shrinkage and capillary water absorption is lower in the presence of GRP dust. This decrease could imply enhanced durability of GRP mortars when used as supporting role. (C) 2013 Elsevier Ltd. All rights reserved.
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