Abstract
This study aims to propose a simple evaluation method of crack width in reinforced FRCC members. Uniaxial tension test is conducted for steel-reinforced FRCC prism specimens with slits to measure crack width clearly. The test parameters are cross-sectional size of prism and fiber volume fraction of FRCC. Through the loading test, steel strain – crack width relationship is obtained. The theoretical calculation formula to predict crack width in steel-reinforced FRCC is led by solving the force equilibrium and compatibility conditions between FRCC and reinforcing bar considering bond stress – slip relationship, fiber bridging law (bridging stress – crack width relationship) and condition of crack occurrence. The steel strain – crack width curves predicted by the proposed formula show a good adaptability with the experimental results in each parameter.
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