A Study on the Strength Properties and the Temperature Curve of Winter Concrete According to the Difference of Curing Method in Mock-up Test Kim, Young-Jin; Lee, Sang-Soo; Won, Cheol; Park, Sang-Joon;
This study is to investigate the temperature curve and development of compressive strength due to the curing conditions and to evaluate the optimum curing condition of test specimens showing the same development of strength to that of real structures in cold weather. The results of temperature curve with curing conditions in mock-up tests showed the trend of decrease plain concrete with insulation form, plain concrete with heating, concrete with accelerator for freeze protection, and control concrete in turn. The strength development of plain concrete of inside and outside of shelter showed the very slow strength gains due to early freezing, but that of concrete with accelerator for freeze protection showed the gradual increase of strength with time. From this, it is clear that accelerator for freeze protection has the effects of reducing the freezing temperature and accelerating the hardening under low temperature. Strength test results of small specimens embedded in members and located in insulation boxes at the site are similar to that of cores drilled from the members at the same ages, thus it is clear that these curing methods are effective for evaluation in-place concrete strength.
winter concrete;accelerator for freeze protection;mock-up test;adiabadic curing;curing with heating;
Fundamental Properties of Magnesia-Prosphate Composite Considering Mix Conditions and Curing Temperature, Journal of the Korea institute for structural maintenance inspection, 2012, 16, 6, 163
Development Ultra Rapid Hardening Construction Materials on Cold Weather Environment Considering Curing Temperature, Journal of the Korea institute for structural maintenance and inspection, 2013, 17, 5, 59
한천구외 5인,'내한제 및 단열거푸집에 의한 한중콘크리트시공의 효율화 관한 기초적 연구(슬래브를 중심으로)', 한국콘크리트학회 가을학술발표 논문집, 한국콘크리트학회,제13권 2호, 2001, pp.913-918
이상수외 3인, '내한촉진제를 사용한 시멘트 모르터의 동결 및 강도특성에 관한 연구', 한국콘크리트학회 가을학술발표논문집, 한국콘크리트학회, 제12권 2호, 2000, pp.1267~1272
김영진외 4인, '내한촉진제를 이용한 겨울철 콘크리트의 개발에 관한 연구', DEP-002-2002, 대우건설, 2002