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采用四电极法测试了不同混凝土配合比试件的表面电阻率,分析了表面电阻率随水灰比及胶凝材料配比的变化,并进一步对表面电阻率与电通量的相关性进行了回归分析。试验结果显示,表面电阻率随水灰比增大而减小,双掺矿渣和粉煤灰时混凝土的表面电阻率较大,表面电阻率与电通量具有较好相关性。
The four-electrode method was used to test the surface resistivity of concrete with different proportions of concrete. The change of surface resistivity with water-cement ratio and cementitious material ratio was analyzed, and the correlation between surface resistivity and electrical flux was also regressed analysis. The experimental results show that the surface resistivity decreases with the increase of water-cement ratio. The surface resistivity of concrete is higher when slag and fly ash are mixed. The surface resistivity and electric flux have a good correlation.