Experimental Research On Electric Conduction Properties And Force-electricity Properties Of Carbon Fiber Reinforced Concrete

Concrete is the most applied structural materials in civil engineering. But serious damage, even sudden breakage of concrete structures is generated because of steel corrosion, environmental erosion and man-made factors. With the accumulation of the damage, disaster result is possibly generated. With the development of modern civil technology, the humankind set higher and higher requirements on the long-time monitoring of the safety of the grand projects. So it is an important strategy to develop a healthy monitoring and self-adaptive control system for concrete structures, especially, for some crisis infrastructures. Based upon the introduction above, electric conduction properties and force-electricity properties of carbon fiber reinforced concrete are studied for providing a theoretical and experimental rule for smart concrete structures.The main research contents in this paper are stated as follow:(1) research on electric conduction properties of carbon fiber reinforced concrete:In this dissertation, the study on electric conduction properties of carbon fiber reinforced concrete (CFRC) in the world has been roundly reviewed and presented technical route, and mechanics of electric conduction has been systematically represented; By means of the Uniform design, the conductivity of carbon fiber reinforced concrete is tested against three factors which are the dose of carbon fiber, the dose of the dispersant agent and the silica fume. And the optimum proportion is obtained by regression analysis .The influencing factor including age, temperature, double current voltage, and change of voltage for the electrical resistivity is studied and corresponding regularity is acquired.(2) research on force-electricity properties of carbon fiber reinforced concrete:Force-electricity properties of carbon fiber reinforced concrete sample are tested .pressure and electrical resistivity regularity is obtained and its mechanics is analyzed. The resist compression properties are studied against three factors which are the dose of carbon fiber, the dose of the dispersant agent and the silica fume. Three point bending reinforced concrete beam incorporating the well proportion of carbon fiber is studied and pressure-sensitive properties is represented in compressive region, at the same time inverse relationship is represented in tension region,...