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Title |
Correlation Between Tensile Strength and Compressive Strength of Ultra High Strength Concrete Reinforced with Steel Fiber
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Authors |
배백일(Baek-Il Bae) ; 최현기(Hyun-Ki Choi) ; 최창식(Chang-Sik Choi) |
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DOI |
http://dx.doi.org/10.4334/JKCI.2015.27.3.253 |
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Keywords |
섬유보강 초고강도 콘크리트 ; 쪼갬인장강도 ; 휨인장강도 ; 회기분석 steel fiber reinforced ultra-high strength concrete ; splitting strength ; flexural strength ; regression analysis |
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Abstract |
Ultra-high strength concrete which have 100 MPa compressive strength or higher can be developed applying RPC(Reactive Powder Concrete). Preventing brittle failure under compression and tension, ultra-high strength concrete usually use the steel fibers as reinforcements. For the effective use of steel fiber reinforced ultra-high strength concrete, estimation of tensile strength is very important. However, there are insufficient research results are available with no relation between them. Therefore, in this study, correlation between compressive strength and tensile strength of ultra-high strength concrete was investigated by test and statistical analysis. According to test results, increasing tendency of tensile strength was also shown in the range of ultra-high strength. Evaluation of test results of this study and collected test results were carried out. Using 284 splitting test specimens and 265 flexural 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 tensile strength of steel fiber reinforced ultra-high strength concrete.
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