Concrete Reinforced with Deformed Steel Fibers, Part I: Bond-Slip Mechanisms

摘要: Bond-slip characteristics were investigated for three deformed steel fibers bonded in concrete matrixes with different strengths. Fibers aligned at 0, 15, 30, 45, and 60 deg respect to the loading direction, complete load-versus-slip curves obtained. It was found that bond-slip of direction signifcantly superior those inclined fibers. Inclined supported smaller peak pullout loads absorbed less energy than A high-strength matrix often caused brittle fiber failures, led reductions energy-absorption capability. The paper provides interpretations based on various micromechanical processes fiber, identifies conditions lead a response. information generated this study will be correlated actual behavior reinforced second part paper.