한중콘크리트에 있어서 폐부동액을 이용한 내한제의 효율성에 관한 기초적 연구

A Fundamental Study on the Effectiveness of Anti-freeze Agent Using Waste Coolant in Cold Weather Concreting

In this paper, tests are carried out in order to investigate the validities of anti-freeze agent, which is developed using waste coolant and existing anti-freeze agent through previous study, under various W/C and contents. According to test results, adequate dosage of developed anti-freeze agent shows positive performance in slump, air content and chloride contents in the mixture of 40% and 50% of W/C, accelerates setting time and drops the freezing temperature of concrete. Meanwhile, in the region of 30% of W/C, followings can be indicated that increasing the contents of anti-freeze agent leads to reduce fluidity, rapid setting and excessive chloride contents. Improved strength gain is shown when anti-freeze agent is used with in 8%.