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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.15 No.3

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Flexural performance evaluation of SFRC with design strength of 60 MPa

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2013, v.15 no.3, pp.175-186





& (2013). Flexural performance evaluation of SFRC with design strength of 60 MPa. (사)한국터널지하공간학회, 15(3), 175-186.

Abstract

Based on Model Code 2010, flexural and residual strength, flexural toughness of SFRC with design strength of 60 MPa are evaluated. For comparisons, SFRC with design strength 40 MPa was tested. Distribution of steel fibers in crack surface of specimens was evaluated by visual inspection. The used steel fibers were hooked fibers with aspect ratio of 64, 67 and 80. In all specimens, mix ratio of steel fibers was 0.5% Vol. In results, only SFRC with the highest aspect ratio satisfied requirements specified in Model Code 2010. The results demonstrated that the use of high aspect ratio will provide enough flexural toughness for high strength concrete. Also, it is found that low slump of high strength concrete can help to enhance isotropic fiber distribution.

keywords
휨강도, 강섬유 보강콘크리트, 섬유분산, 고강도, Flexural Strength, SFRC, Fiber Distribution, High Strength

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