표준기 환경 구조체 콘크리트 코어 강도와 표준양생 공시체의 압축강도 배합강도 보정값    선정 연구

초록

In this study, one-component concrete and two-component concrete were manufactured, and the 91st day of curing for the structural concrete and the 28th day of curing for the standard-cured test specimen concrete were measured to calculate the structural compensation strength value. The one-component system has an OPC mix with a W/B ratio of 0.35, 0.45, and 0.55, and the two-component system has an OPC+FA mix and an OPC+GGBFS mix with a W/B ratio of 0.35, 0.45, and 0.55. At this time, FA and GGBFS, which are substituted for OPC in the two-component formulation, have different mixing ratios; for FA, they are 10%, 15%, and 20%, and for GGBFS, they are 20%, 40%, and 60%. The experimental method is to produce a concrete structure of (W*D*H)600*600*800(mm) and a Φ100*200(mm) test specimen. After that, the structural concrete was core sampled on the 91st day, cut and polished to measure the compressive strength, and the standard cured specimen was polished to measure the compressive strength. Accordingly, the compressive strength data of the structural core concrete and the standard-cured test specimen concrete were compared and evaluated to calculate the correction value.

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