Application of composite materials to rehabilitation of infrastructure: a test method for evaluation of bonding strength between composite sheet and concrete

摘要

A new test method for peeling strength of FRP sheets bonded on concret or mortar was proposed. A simple data reductionscheme was proposed to measure the critical energy release rate of debonding based on the linear elastic fracture mechanics and elasticity of thin membrane. Applicability of the proposed method was affirmed by experiments. The effect of surface treatment and primer material were compared by using the proposed test method. The concrete surface was treated with two different disk sanders in comparison with no treatment, and the treated surface was given with and without the coating of primer material. The efect of surface treatments and primer were compared.