Experimental Study on Mechanics and Pressure Sensitivity of Carbon Fiber RPC

To study the mechanical properties and conductivity enhancement effect of carbon fiber (CF) on reactive powder concrete (RPC), this work systematically investigated changes in compressive strength, elastic modulus, Poisson’s ratio, pressure sensitivity RPC under standard curing system. With age, CF content, as parameters, micro-method for scanning mechanism was used to content RPC. The experimental results showed that with increase poisson's ratio strength tended first then decrease. modulus decreased increased, 0.75% turning point content. resistivity decreases gradually, while change rate (FCR) shows a trend increasing decreasing first, there is strong corresponding relationship between strain FCR.When 0.75%, maximum FCR 38.8%, which increased by 33%. highest stress group, reaching 2.05%/Mpa 513.7, respectively.