초고강도 강섬유 보강 콘크리트의 인장강도와 압축강도 사이의 상관관계에 관한 연구

초록

Ultra-high strength concrete which have 100 MPa compressive strength or higher can be developed applyingRPC(Reactive Powder Concrete). Preventing brittle failure under compression and tension, ultra-high strength concrete usually usethe steel fibers as reinforcements. For the effective use of steel fiber reinforced ultra-high strength concrete, estimation of tensilestrength is very important. However, there are insufficient research results are available with no relation between them. Therefore, inthis study, correlation between compressive strength and tensile strength of ultra-high strength concrete was investigated by test andstatistical analysis. According to test results, increasing tendency of tensile strength was also shown in the range of ultra-highstrength. Evaluation of test results of this study and collected test results were carried out. Using 284 splitting test specimens and 265flexural test specimens, equations suggested by previous researchers cannot be applied to ultra-high strength concrete. Therefore,using database and test results, regression analysis was carried out and we suggested new equation for splitting and flexural tensilestrength of steel fiber reinforced ultra-high strength concrete.

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