Abstract
The quantitative evaluation of tensile ductility of steel fiber reinforced concrete (design strength 30-60 MPa) containing 0.5-1.0% steel fiber with hooks at the ends was investigated. The maximum value of tensile stress after cracking in the tensile softening curve could be roughly evaluated by the linear formula of compressive strength. The influence of aggregate type, coarse aggregate content and air content on the formula was relatively small. Similarly, the average value of tensile stress up to 1 mm crack width in the tensile softening curve could be roughly evaluated by the linear formula of compressive strength.
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