shear resistance evaluation of strain-hardening cementitious composites member

This paper presents an experimental investigation for evaluating the shear resistance of strain-hardening cementitious composite (shcc) member. the implemented investigation focuses on the shear fracture characteristics of shcc member. especially, the respective contributions of matrix and reinforcing fiber for shear resistance of shcc member are quantitatively calibrated. the research illustrates that all experimental specimens experience multi-cracking process in the diagonal shear direction. this behavior is significantly influenced by both fiber bridging effect and matrix contact effect, whereas fiber bridging effect gradually plays a dominant role during loading process. especially, the specimens finally fail in shear due to localization of some multiple fine cracks with losing fiber bridging effect and matrix contact effect on crack surface. moreover, the quantitative research demonstrates that the shear load carrying capacity of shcc member can be assumed as the sum of shear load carried by matrix and reinforcing fiber. this work provides an experimental foundation for shear resistance of shcc member.