Mechanical Behavior of Strain Hardening Cement Based Composite Concrete

Abstract

Abstract: In this research work we had to enhance the compressive as well as tensile strength of concrete with retrofitting method using the SHCC (strain hardening cement based composite). There are two critical issues with this type of cement replacement i.e. the changes in physical properties of concrete with respect to compressive, tensile strength and cost analysis of alternatives. The first stage of this research looks at the change in physical properties of concrete when cement is replaced by PVA fiber with respect to compressive strength and tensile strength. The result from this research shows a linear diminution in strength with linear increase in the relative %age of PVA fiber to cement. A traditional cost analysis looks only at the first or construction cost without considering the long-term cost to palliate for the increased global warming emission resulting from the manufacturing process of Portland cement. Experiments were performed on concrete mixtures with varying PVA fiber contents in concrete i.e. 0%, 1%, 2%, 3%, 6% and 9%. For SHCC the cubes specimens of size (150mmx150mmx150mm) with mild steel rods were used to early setting and hardening. We have to check the compressive strength at 3days, 7days and 28days and Tensile Strength at 28 days after the curing of sample.