동절기 구조체 콘크리트에 적용된 갱폼의 종류에 따른 초기 적산온도와 압축강도의 발현에 대한 연구

초록

In this study, the early strength development of structural concrete poured in a winter environment (below 4 degrees) was evaluated and the early strength development according to the type of formwork was compared. In the test, the same production was carried out by applying a one-component concrete mixture of 25-30-150, and gang form was applied as the formwork. At this time, three types of gang form were used: general gang form, insulated gang form, and heated gang form. Specimens for measuring compressive strength were produced for field air curing, field sealed curing, and standard curing. The compressive strength test was measured on the 1st, 3rd, 7th, and 28th days of curing, and the compressive strength was measured for the mold specimens according to the curing conditions and the core specimens of structural concrete according to the type of gang form. The test results showed that the core specimen of the structural concrete to which the heating gang form was applied on the first day of curing showed the highest compressive strength, while the mold specimen that underwent field air drying curing showed the lowest compressive strength. On the 28th day, the mold specimen that underwent standard curing showed the highest compressive strength, while the core specimen of the structural concrete to which the insulating gang form was applied showed the lowest compressive strength.

키워드