Chloride resistance of concrete containing rice husk ash by rapid migration test

Abstract

Sodium chloride is the most influencing factor that affects the durability of concrete. The main objective of this study is to investigate the influence of rice husk ash (RHA) having different percentages cement replacement on sodium chloride solution of concrete with wetting and drying cycles. Rapid migration test (RMT) was performed on concrete containing RHA. The relationships between all test results were experimentally investigated. In this study, RHA was used as a supplementary cementing material to replace an ordinary Portland cement type I by the percentage of 10%, 20%, 30%, and 40% by weight of cement. Water to binder ratio was kept constant at 0.49. Test results showed that chloride penetration depth of concrete containing RHA is lowest than that of OPC concrete. On the other hand, a positive correlation exists between the total charge passed, depth of penetration, time, and initial current.