고로슬래그 미분말 치환율에 따른 프리캐스트 철근콘크리트 보의 전단거동 평가
Evaluation of Shear Behavior of Precast RC Beams According to Replacement Ratio of Ground Granulated Blast Furnace Slag
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초록
이 연구에서는 고로슬래그 미분말을 사용한 프리캐스트 보의 전단성능에 대하여 평가하였다. 실험체는 고로슬래그 미분말 치환율에 따라 총 4체의 실험체를 제작하였다. 모든 실험체는 전단경간비 2.5, 보의 폭 200mm, 유효깊이 300mm이며, 3점 가력을 받는 단순보로 계획하였다. 또한 이 연구에서는 실험체의 전단강도를 예측하기 위하여 기존 전단강도 예측식을 이용하여 실험결과와 비교하였으며, 총 89개의 기존 전단 실험결과를 이용하여 실험결과와 비교 분석하였다. 실험결과, 고로슬래그 미분말을 치환한 실험체는 포틀랜드 시멘트만을 사용한 실험체와 비교분석한 결과 유사한 전단성능을 나타내었다.
Abstract
This study evaluates the shear performance of precast beams with ground granulated blast furnace slag. A total of fourspecimens according to replacement ratio of ground granulated blast furnace slag. The specimens under three loading points hada shear span-to-depth ratio of 2.5, and a rectangular section with a width of 200mm and a effect depth of 300 mm. In this study,existing equations were used for predicting the shear strength of the specimens. The shear strength by existing equations wascompared with those of 89 reinforced concrete beams without shear reinforcement. It can be shown from experimental results thatall specimens with ground granulated blast furnace slag showed a similar shear strength as compared with the specimen withportland cements alone.
참고문헌 (16)
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