掺矿物混合材混凝土“自愈力”研究

The research on the "self-repairing capacity" of concrete incorporated with mineral additive

本文对水泥砂浆体系与电极的等效电路模型进行了理论分析。通过对掺混合材水泥砂浆交流阻抗试验 ,对该体系的界面电阻与材料的性能之间的关系进行了讨论 ,并引入了材料的“自愈力”这一概念。研究结果表明 ,利用交流阻抗实验测得的界面电阻Rint能够对水泥基复合材料进行体系的自愈力研究 ,并为合理选用混合材的掺量提供科学的依据。

The equivalent circuit model of cement mortar system and the electrode are theoretically analyzed in this paper.By means of AC impedance experiment on cement mortar incorporated with mineral additive,the relationship between ITZ resistance and material performance of the system is discussed and the concept of 'self repairing capacity'is also introduced.The results show that the self repairing capacity of cement based composite meterial system can be studied by the ITZ resistance measured from AC impedance experiment so that scientific foundation be provided to the reasonable selection of the dosage of mineral additive.