炭黑碳纤维复相导电混凝土的导电性能研究

Study on the electric conduction function of carbon black and carbon fiber diphasic electrically conductive concrete

研究了炭黑碳纤维复相导电混凝土的导电性能,分析了导电混凝土的电阻率变化,为实际应用于道路融雪化冰提供理论依据与试验依据。利用纳米导电炭黑和碳纤维作为导电相来改善混凝土的导电性能,进行炭黑碳纤维复相导电混凝土的导电性能试验,分析环境温度、干湿度和外加电压对炭黑碳纤维导电混凝土电阻率的影响。导电混凝土的电阻率受温度、湿度和外加电压的影响,当环境条件发生变化时,导电混凝土的导电性能也会发生变化。炭黑碳纤维复相导电混凝土的电阻率随着温度的升高出现一定程度的减小;干燥状态下的电阻率高于潮湿状态下的电阻率;电阻率随着外加电压的增大有一定程度的减小,当电压达到一定数值时,电阻率趋于稳定。

It aimed at the research on the electric conduction fimction carbon black and carbon fiber diphasic electrically conductive concrete, and analyse the change of resistivity.The methodology adopted as theoretical basis and experimental basis can be used in deicing or snow-melting in future.Carbon black and carbon fiber as the electric conduction is used to improve the electric conduction fimction of concrete.Conduct the experiment of the electric conduction function of carbon black and carbon fiber diphasic electrically conductive con- crete.The effect of temperature ,humidity and plus voltage on resistivity of carbon black and carbon fiber diphasic electricall conductive concrete was analysed.When environment chang, the electric conduction function of concrete will chang too.As the rise of temperature the experimental results showed that the resistivity of carbon black and carbon fiber diphasic electrically conductive concrete will reduct in a certain degree.The resistivity in dry state was higher than the state of wet. As the rise of plus voltage the resistivity of carbon black and car- bon fiber diphasic electrically conductive concrete will reduct in a certain degree.When the voltage is to a certain number ,the resistivity trend to be stabile.