基于抗渗性试验的混凝土自修复材料研究  

Research on Concrete Self-Repair Material Based on Autobiographic Test

作　　者：辛晓斌 李骁男 马挺 张茂亮 马炎 XIN Xiaobin;LI Xiaonan;MA Ting;ZHANG Maoliang;MA Yan(Henan Building Materials Research and Design Institute Co.Ltd.,Zhengzhou 450000,China)

机构地区：[1]河南建筑材料研究设计院有限责任公司,郑州450000

出　　处：《河南科学》2022年第4期628-632,共5页Henan Science

基　　金：河南省科学院基本科研业务费项目(210609013)。

摘　　要：以抗渗压力恢复率为评价指标,研究衣地酸二钠、甲酸钙和硅酸钠等活性反应物质复合而成的混凝土自修复材料(NNC)对混凝土裂缝修复后抗渗性能的影响并提出了指导工程应用的最佳浓度和使用方式.结果表明,NNC溶液能够提高混凝土的抗渗压力恢复率.采用浸泡法掺入NNC溶液,最佳处理方式为:①掺入1%NNC时,处理时间为60 d;②掺入2%NNC时,处理时间为28 d.当采用加压注入裂缝的方式时,掺入2%NNC最佳.With anti-seepage pressure recovery rate as evaluation index,the effect of concrete self-restoration material(NNC)composed of diazodic sodium,carboxylate and sodium silicate,on the anti-seepage properties of concrete crack repair is studied.The results show that the NNC solution can improve the anti-seepage pressure recovery rate of concrete.When NNC solution is added by immersion,the optimal treatment method is as follows:①When the concentration is 1%,the treatment time is 60 d.②When the concentration is 2%,the treatment time is 28 d.While the NNC solution is added into cracks by pressurized injection,the optimal concentration is 2%.

关 键 词：抗渗压力恢复率 自修复 浸泡 加压 

分 类 号：TU528.01[建筑科学—建筑技术科学]