휨-압축을 동시에 받는 섬유보강 분체 콘크리트 압축재의 강도에 대한 연구

초록

Recently, for the economical use of ultra high strength con crete, many researches have been carried out. In this research, four columns, which was made by the reactive powder concrete was tested. All test specimens have 200 mm of square section. Two of them have longitudinal reinforcement and last of them have no longitudinal reinforcements. All test specimens were reinforced with 2% volume fraction of steel fibers. Compressive strength of concrete were 100 and 150 MPa. Test results show that stress block of ultra high strength concrete have triangular shape and ultimate strain was larger than 0.003 which was used for normal strength concrete.