Recycled Aggregate Concrete Prepared with Water-Washed Aggregates - An Investigative Study
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In an experimental study, specimens of concrete mixes prepared using water-washed recycled aggregates (RA) with a fixed water to cement ratio of 0.45 and with 25%, 50%, 75% and 100% replacements of coarse aggregates by RAs are tested for tensile and compressive strengths and elastic modulus values. For the concrete mix produced with washed RAs and with a 75% replacement of coarse aggregates by RAs, 19% 35.3% and 1.4% improvements, respectively in compressive strength, indirect tensile strength and modulus of elasticity, compared with its counterpart prepared using non-washed aggregates, were observed. Initial exper-imental results show that removal of loose and weak particles attached to the surfaces of RAs by washing, can improve the performance of RACs produced.
22nd Australasian Conference on the Mechanics of Structures and Materials “Materials to Structures: Advancement through Innovation”