An Experimental Study on Resistance of rapid Freezing and Thawing of Chloride-inhibiting Low-Heat Cement

This study was conducted to assess the durability of Chloride-inhibiting Low-Heat Cement while being subjected to freezing-thawing during winter seasons. Although durability varies slightly depending on the conditions of the jobsite, frost damage to concrete resulting from repeated freezing and thawing over the course of seasonal changes is the leading cause behind lowered concrete durability. in addition, concrete that has been subjected to freezing and thawing during the winter season develops a significant amount of expansive force at the core and begins to exhibit signs of damage, such as cracking, peeling, and detachment from the aggregate. Therefore, this study fabricated test specimens using a Chloride-inhibiting Low-Heat Cement(CLC) and the widely used blast furnace slag cement(BFS) and Ordinary Portland Cement(OPC) with water-to-cement ratios of 35%, 40% and 45%, respectively, to assess the durability index of the CLC as per resistance to freezing-thawing. The specimens were then tested using the KS F 2456 method (Testing method for resistance of concrete to rapid freezing and thawing) to measure the dynamic modulus of elasticity. The dynamic modulus of elasticity measurements were then used to derive the durability indices. By comparing the durability indices, it was confirmed that CLC, BFS, and OPC all had superior durability. ??? ????????? ????????? ???????????? ???????????? ?????? ????????? ??????????????????(CLC)??? ???????????? ??????????????? ?????? ?????????. ????????? ????????? ??????????????? ?????? ?????? ????????? ?????????, ??????????????? ?????? ???????????? ?????????????????? ??? ?????? ??????????????? ????????? ????????? ????????? ????????? ???????????? ??? ??? ?????????, ????????? ??????????????? ?????? ??? ???????????? ???????????? ??? ???????????? ???????????? ???????????? ??????, ?????? ??????, ?????? ?????? ?????? ??????????????? ?????? ??? ??????. ????????? ??? ??????????????? ????????? ????????? ??????????????????(CLC)??? ???????????? ???????????? ?????? ????????? ????????? ???????????? ?????? ????????? ??????????????????(CLC)??? ?????? ?????? ???????????? ?????? ????????????????????????(BFS), ?????? ?????????????????????(OPC)??? ?????? ???/???????????? 35%, 40%, 45% ??? ????????? ?????? ????????? ?????? ?????? ????????? ??? ???????????????. ????????? ???????????? KS F 2456(???????????? ????????? ?????? ??????????????? ?????? ????????????)????????? ?????? ???????????? ????????? ???????????? ?????? ????????? ????????? ??????????????????, ????????? ??????????????? ????????? ????????? ?????????????????? ???????????????. ????????? ????????? ?????? ????????? ?????? ????????? ??????????????????(CLC), ??????????????? ?????????(BFS), ?????? ????????? ??? ?????????(OPC) ?????? ????????? ????????? ????????? ???????????? ????????? ?????? ?????????