水泥砂浆在载荷作用下的电学模型研究

An Electrical model of Cement Mortar During Loading

水泥砂浆试块在载荷作用下会产生电信号 (电压或电流 ) ,推导了这种力电效应的电学模型。载荷作用下的水泥砂浆试块相当于一个电流源 ,电解质水溶液在孔隙中流动会遇到阻力形成内阻 ,电极和其中的水泥砂浆电介质构成电容。并分析了模型中每个元件的构成和大小 。

Electrical current or voltage is produced as the compressive stress is applied on cement mortar specimen. This phenomena is called as mechanoelectric effect. In this paper, the electrical model of this effect was investigated. In the model, cement mortar during loading is regarded as an electrical current source. The resistance is imposed on water when it flows through the porous matrix, and this is the origin of the internal electrical resistance. The capacitor is made up of electrodes and cement mortar. This model can explain experimental results on mechanoelectrical effect of cement mortar.