Influence of rice husk ash on durability of concrete
2005
Ishiguro, S.(Mie Univ., Tsu (Japan). Faculty of Bioresources)
The influences of rice husk ash (RHA) used as a partial cement replacement material on the durability of concrete and mortar were studied and reported in this paper. The properties of the RHA concrete, such as carbonation, freeze thaw durability, drying shrinkage, compressive strength development, resistance of steel corrosion to chloride ion penetration, and resistance to acid attack were determined and compared to those of the control concrete without RHA. The results indicated that the RHA in concrete increased the carbonation depth of the concrete with increasing the RHA content, while it improved the resistance to acid attack of the RHA mortar immersed in a sulfuric acid solution. The observed differences between the control and RHA concrete also showed that the RHA in concrete was effective in the strength development and the improvement of the durability of concrete.
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