Abstract
We investigate bond behaviour between fiber sheets and concrete by the experiments and non-linear finite element method. Moreover, we estimate bond strength between fiber sheets and concrete. In these experiments, we investigated the bond strength by the influence of the different types of sheets, the different compressive strengths of concrete, the different bond lengths of sheet and the different bond widths of sheet. We discuss only the failure due to sheet peeling from concrete surface because we think this failure pattern is the best bond function. In the results of these experiments and these analysis, the bond strength between fiber sheets and concrete depends on the compressive strength of concrete. The effective bond length exists because the bond strength becomes constant over a certain value of the bond length. In the results of these experiments, the bond strength is not proportional to the width of the fiber sheet below a certain value of the width of the fiber sheets. The lower the width of the fiber sheets below a certain value is, the higher the bond strength per unit width is.
