Zhou Renzhan, Li Qiang, Wang Jiandong, Zhou Kewen, He Rui, Fu Chuanqing
School of Civil and Water Engineering, Bengbu University, Bengbu 232008, China.
College of Civil Engineering and Architecture, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.
Materials (Basel). 2021 Jun 8;14(12):3141. doi: 10.3390/ma14123141.
A newly proposed modified non-contact electrical resistivity measurement was used to test the resistivity of concrete and cement mortar. The oxygen diffusion coefficients of concrete and mortar were determined by a gas diffusion measurement, and the capillary porosity of concrete and cement mortar was measured by mercury intrusion porosimetry (MIP) measurement. The obtained electrical resistivity and capillary porosity results were verified with other researchers' data, the measured electrical resistivity results can be estimated by a simple equation from the capillary porosity results. The obtained oxygen diffusion coefficient results were quantitatively correlated with capillary porosity and electrical resistivity measurement results. The proposed equations can be practically used to assess the electrical resistivity and oxygen diffusion coefficient.
一种新提出的改进型非接触式电阻率测量方法被用于测试混凝土和水泥砂浆的电阻率。通过气体扩散测量确定了混凝土和砂浆的氧扩散系数，并通过压汞法（MIP）测量了混凝土和水泥砂浆的毛细孔隙率。将获得的电阻率和毛细孔隙率结果与其他研究人员的数据进行了验证，测得的电阻率结果可以通过一个简单的方程从毛细孔隙率结果中估算出来。所获得的氧扩散系数结果与毛细孔隙率和电阻率测量结果进行了定量关联。所提出的方程可实际用于评估电阻率和氧扩散系数。
