A Study on Compensation Effect of Autogenous Shrinkage of Mortars with Expansive Additives.

In this study, the compensation effect on autogenous shrinkage of three types of high-fluidity mortars containing different binders prepared by adding with two types of expansive additives at various additive content had been examfined. As a result, it was cleared that, any expansive additive has the compensation effect for autogenous shrinkage, especially a free-lime rich calcium sulfoaluminate based-expansive additive has larger compensation effect for autogenous shrinkage than conventional calcium sulfoaluminate based-expansive additives, and that the effect of the mortar prepared with the same additive content of the expansive additive on the expanded volume varies according to the type of binder.