Correlation Test Between Cube Crushing Strength and Microcosmic Pore Structure

Cube crushing strength test and gas adsorption analysis of different grade mineral admixture concrete was carried out to analyze the regression relationship between cube crushing strength and microcosmic pore structure. Test results show that the microcosmic pore structure distribution has important effect on concrete mechanical properties. Concrete cube crushing strength increases with the decrease of microcosmic pore structure index such as surface area,pore volume and pore radius. Cube crushing strength in different ages all have a good linear correlation relationship or nonlinear regression relationship with microcosmic pore structure index.