Abstract

Effects of cement type, water to binder ratio and volume concentration of aggregate on autogenous shrinkage of cement based materials were experimentally investigated. A large amount of autogenous shrinkage was observed in cement paste and concrete with low water to binder ratio. Autogenous shrinkage increased with increasing C3A content of cement. It was also increased by using blast furnace slag with higher fineness. The effect of volunre concentration of aggregate could be estimated by an existing composite law. Some vpes of admixtures were effective in reducing autogenous shrinkage.

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