Influences of limestone powder on the performance of self compacting concrete

This paper primary researched the influence of limestone powder on the workability, the strength performance and the volume stability of self compacting concrete (SCC). Results showed that the workability of self compacting concrete was improved greatly by mixing proper limestone powder; besides, limestone powder could improve early age strength of concrete obviously, but had little influence on long age strength; the self-shrinkage of concrete increased as the admixture of limestone powder increased. The content of limestone should be capped at 10% and the optimum mix amount is about 7%.