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Title |
Tension Stiffening Effect 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.2014.26.5.581 |
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Keywords |
비정질 강섬유 ; 피복두께 ; 인장강화효과 ; 쪼갬균열 ; 강섬유 ; amorphous steel fiber ; cover thickness ; tension stiffening effect ; splitting crack ; steel fiber |
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Abstract |
This paper presents the tension stiffening behavior from experimental results of each 6 amorphous steel fibers and normal steel fibers reinforced direct tensile specimens with the main variables such as cover thickness to bar diameter ratio. A tension stiffening effect for steel fiber reinforced RC tension members improve on the increase in cover thickness, and also amorphous steel fiber is usually superior to normal steel fiber. The reinforcement of steel fibers controlled the splitting cracks and led to significant increase in the tension stiffening effect. In particular, if cover thickness is more than twice the bar diameter, the amorphous steel fiber reinforced specimen is controlled the splitting crack and increased the tension stiffening effect. And, the tension stiffening effect of amorphous steel fiber reinforced concrete tension members is different to current structural design code provision.
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