Conductive Properties and Influencing Factors of Electrically Conductive Concrete:a Review
JIA Xingwen1, ZHANG Xin1, MA Dong1, YANG Zaifu2, SHI Congli2, WANG Zhi1
1 School of Materials Science & Engineering, Chongqing University, Chongqing 400045; 2 Engineering Technology Center of Building Materials and Products of Chongqing, Chongqing 401122
Abstract: Conductive concrete is a composite which has many characteristics or functions, including conductivity, electric heating, electromagnetic shielding, etc. It has a broad application prospect in melting snow on road, connecting electrical equipment, monitoring structure health and shielding electromagnetic. Conductive concrete should have proper electrical conductivity and resisti-vity stability, however the electrical conductivity and resistivity stability would decrease when the concrete are influenced by the type, form and content of the conductive materials, the moisture content of conductive concrete as well as the temperature and humidity of the environment. Thereby, the engineering application of conductive concrete is restricted. On the basis of comparing the differences of common conductive materials and conductive properties of conductive concretes, research status of conductive properties and pre-paration methods of conductive concrete are discussed. Furthermore, this paper proposes a systematic analysis of the effect of conductive material type and content on the electrical conductivity, and suggestions for improving the electrical conductivity and resistivity stability.
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