Journal
CEMENT & CONCRETE COMPOSITES
Volume 34, Issue 7, Pages 848-854Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2012.03.003
Keywords
Recycled aggregate; Fly ash; Bagasse ash; Durability; Water permeability
Funding
- Office of the Higher Education Commission, Thailand
- Thailand Research Fund (TRF) [RTA5380002]
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This research aims to study the effect of ground fly ash (GFA) and ground bagasse ash (GBA) on the durability of recycled aggregate concrete. Recycled aggregate concrete was produced with recycled aggregate to fully replace crushed limestone in the mix proportion of conventional concrete (CON) and GFA and GBA were used to partially replace Portland cement type I at the rate of 20%, 35%, and 50% by weight of binder. Compressive strength, water permeability, chloride penetration depth, and expansion by sulfate attack on concretes were investigated. The results reveal that the use of GFA and GBA to partially replace cement in recycled aggregate concrete was highly effective in improving the durability of recycled aggregate concrete. The suitable replacement of GFA or GBA in recycled aggregate concrete to obtain the suitable compressive strength, low water permeability, high chloride penetration resistance, and high sulfate resistance is 20% by weight of binder. (C) 2012 Elsevier Ltd. All rights reserved.
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