Effect of ground fly ash and ground bagasse ash on the durability of recycled aggregate concrete |
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| Authors: | Rattapon Somna Chai Jaturapitakkul Amde M Amde |
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| Affiliation: | 1. Department of Civil Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand;2. Department of Civil & Environmental Engineering, Clark School of Engineering, University of Maryland, College Park, MD 20742, USA;1. Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, China;2. Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil Engineering, Shenzhen University, China;1. Dept. of Science and Engineering of Materials, University of Cantabria, School of Civil Engineering, Avda. Los Castros s/n, Santander 39005, Spain;2. Laboratorio Central de Estructuras y Materiales (CEDEX), Ministerio de Fomento, Madrid, Spain;1. Department of Civil and Environmental Engineering, University of Cyprus, 75 Kallipoleos Av., P.O. Box 20537, 1678 Nicosia, Cyprus |
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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. |
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