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水泥基材料裂缝自修复剂对比试验研究
作者：周紫晨，张剑峰，程铠，张冰，刘仕琪
（中冶武汉冶金建筑研究院有限公司，湖北 武汉 430081）
摘要：为了研究水泥基材料自修复剂的实际应用效果和作用机理，采用荷载损伤恢复法和水压渗透性恢复法，对硅酸盐水泥空白试样和 3种分别掺加了国内外自修复剂产品的试样进行了对比试验研究，并对自修复效果进行了评价。利用XRD、SEM、FT-IR等手段分析了自修复剂中的活性物质，并对自修复剂作用下的水化产物进行了分析，基于微观分析结果对水泥基材料自修复作用机理进行了探究。
关键词：水泥；粉煤灰；裂缝；自修复剂；修复机理
中图分类号：TU57+2 文献标识码：A 文章编号：1001-702X（2022）09-0068-05
Comparative experimental study on crack self-healing agent of cement-based materials
ZHOU Zichen，ZHANG Jianfeng，CHENG Kai，ZHANG Bing，LIU Shiqi
（Wuhan Metallurgical Construction Research Institute Co. Ltd.，of MCC Group，Wuhan 430081，China）
Abstract：In order to explore the actual effect and mechanism of self-healing agent for cement-based materials，the load loss recovery method and water pressure impermeability recovery method were used to conduct a comparative experimental study on the blank sample of Portland cement and three kinds of self-healing agent products in China and abroad，and the effect was evaluated. The active substances in various self-healing agents were analyzed by XRD，SEM and FT-IR，and the hydration products under the action of self-healing agents were analyzed. Based on the results of microscopic analysis，the mechanism of self-healing of cement-based materials was explored.
Key words：cement，fly ash，cracks，self-healing agent，self-healing mechanism