Recycled Aggregate Concrete Prepared with Water-Washed Aggregates - An Investigative Study
Abstract
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 ...
View more >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.
View less >
View more >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.
View less >
Conference Title
From Materials to Structures: Advancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012
Publisher URI
Subject
Structural engineering