Modified Micro-Mechanical Fiber Bridging Model for Crack Plane of Fiber Rreinforced Cementitious Composite

섬유보강 복합체의 균열면 해석을 위한 수정 미세역학 모델

In this paper, the post cracking stress-crack width relationship of the composite is studied from a micromechanics points of view. Cook-Gordon debonding effect is studied by more refined method with considering of chemical friction of fiber interface. As a result, fiber with pre-debonding length retards stress development and shows more wide crack width for the same force level. longer pre-debonding length and lower pre-debonding bond strength results in lower full-debonding force, but same crack width.