Abstract
In our past paper, the bond behaviour between one layer fiber sheets and concrete was investigated, and the bond strength between one layer fiber sheets and concrete was estimated. In this paper, the bond behaviour between multi-layer fiber sheets and concrete was investigated by non-linear finite element method and was checked by these experiments. The stress-strain relation of the concrete with one-layer fiber sheets proposed by our past paper was applied to this analysis, and the bond behaviour between multi-layer fiber sheet and concrete has been estimated mostly. By multi-layer fiber sheets, the effective bond length is increased. Although the bond strength of fiber sheets and concrete increases by multi-layer fiber sheets, it is not proportional to the number of fiber sheets. Furthermore, the bond strength between multi-layer fiber sheets and concrete was calculated, and experiment value has been estimated mostly.
