Experimental Research on the Piezoresistive Properties of Cement-based Composites with Different Conductive Admixtures

Conductive cement-based composites with nano-graphite,carbon black have good conductivity and piezoresistive properties,and it can use to achieve traffic monitoring.In this paper,the piezoresistive properties of high conductivity cuboid cement-based composites with any two-phase composed of graphite,carbon black,carbon fiber,under the standard vehicle force with different load cycle are studied.For the selected cases,experimental results show that cement-based composite mixed with graphite and carbon fiber under a certain ratio and vehicle force has the best piezoresistive properties,and compound conductive phase mixed with graphite and carbon black is better than that mixed with carbon black and carbon fiber.