Effect of ground fly ash and ground bagasse ash on the durability of recycled aggregate concrete
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Author list: Somna R., Jaturapitakkul C., Amde A.M.
Publisher: Elsevier
Publication year: 2012
Journal: Cement and Concrete Composites (0958-9465)
Volume number: 34
Issue number: 7
Start page: 848
End page: 854
Number of pages: 7
ISSN: 0958-9465
eISSN: 1873-393X
Languages: English-Great Britain (EN-GB)
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Abstract
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. ฉ 2012 Elsevier Ltd. All rights reserved.
Keywords
Durability
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