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Title |
Cracking Behavior of RC Tension Members Reinforced with Amorphous Steel Fibers
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Authors |
박경우 ; 이준석 ; 김우 ; 김대중 ; 이기열 |
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DOI |
https://doi.org/10.4334/JKCI.2014.26.4.475 |
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Keywords |
비정질 강섬유 ; 균열간격 ; 피복두께 ; 쪼갬균열 ; 강섬유 amorphous steel fiber ; crack spacing ; cover thickness ; splitting crack ; steel fiber |
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Abstract |
This paper presents the experimental results concentrically reinforced concrete tension members and compares cracking behavior of amorphous steel fiber and normal steel fiber reinforced concrete members. Two kind of steel fibers were included as a major experimental parameter together with the six cover thickness to bar diameter ratio (c/db). The presence of amorphous steel fibers effectively controlled the splitting cracks initation and propagation. In the amorphous steel fiber reinforced specimens, no splitting cracks were observed that becomes higher with cover thickness to bar diameter ratio is 2.0. Crack spacing of the each specimens reinforced with amorphous steel fibers and normal steel fibers becomes larger with the increase in cover thickness, and also measured maximum and average crack spacing are significantly smaller than current design code provision. Based on the measured crack spacings, a relationships for predicting the crack spacing is proposed using the measured average crack spacing in amorphous steel fiber reinforced concrete tension members.
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