earticle

영어

This study investigates the effectiveness of cold weather concreting with various form types, applied in column placement. For the properties of temperature history with diverse form types, specimens using steel plate or wooden form indicated under 0〫 C in 20 hours at curing room, especially; concrete using steel plate directly decreased under 0〫 C, regardless of measuring position. It resulted in early frost damage. Concrete with wooden form also exhibited under 0〫 C, except for the center position of the specimen. Meanwhile, temperature of concrete using bubble-board (BB) and insulation-curing-method(IM) does not indicated under 0〫 C, even in the corner of the specimens. Instead, the lowest temperature of that was 3〫 C, which is favorable result, in the corner. Core compressive strength demonstrated the different value between the specimens, depend on whether it got early frost damage. Concrete using BB or IM showed higher strength than specimens using steel plate or wooden form, due to the influence of frost damage in early 24 hours.