CSA계 분체를 사용한 고로슬래그미분말 혼입 모르타르의 조기강도 향상에 관한 실험적 연구

Abstract

The purpose of this study is to improve the early age compressive strength of concrete (1 age, 3 ages) with Ground Granulated Blast Furnace Slag. Therefore, we performed several experimental studies using the new Calcium Sulfo Aluminate(CSA) as a strength accelerator specially early age at the mortar level. we considered the studies of the early-age strength enhancement through early age strength and the nano-analysis of mortar that mortar contains Ground Granulated Blast Furnace Slag with new CSA. As a result, It was showed that the CSA of the fast hydration reaction was rather decreased hydration of the slag. But this could be solved by using TTA. The compressive strength was showed 130.7% higher than OPC on 1 age. And, the compressive strength was showed 93.4% higher than OPC on 3 ages. So, we know that new CSA is very effective to improve the early ages compressive strength in mortar contains Ground Granulated Blast Furnace Slag.