电阻率和电导率
导电体
材料科学
多孔性
微观结构
水泥
复合材料
抗压强度
扩散
工程类
电气工程
热力学
物理
作者
Yuan Sang,Yang Yao,Qi Zhao
标识
DOI:10.1016/j.jobe.2021.103642
摘要
As a non-destructive testing technology, the resistivity method can respond quickly to the microstructure and macro-performance of cement-based materials(CBMs). This paper reviews the resistivity test methods as well as the application of resistivity in hydration, compressive strength and ions diffusion. Besides, in order to capture the evolution of the pore structure by resistivity, the multi-phase conductive models are also systematically reviewed. Emphasis is placed on the evolution history, strength/weakness, and prediction accuracy of these models. The precision analysis results show that the process of model parameters changing with the pore structure cannot be ignored. A conductive model with constant model parameters can only evaluate porosity in the short term but fails to estimate the porosity during the whole service life of CBMs. Future works on the testing methods, raw materials, testing environments and conductive models are indicated.
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