新型刚性结构自防水材料对混凝土抗渗防裂性能的影响研究  

Research on the influence of new rigid structure self-waterproof material on the impermeability and crack-proof behavior of concrete

作　　者：程福星 邓小旭 向飞 李家东 王海龙 CHENG Fuxing;DENG Xiaoxu;XIANG Fei;LI Jiadong;WANG Hailong(Wuhan Ujoin Building Material Technology Co.Ltd.,Wuhan 430083,China;Wuhan Sanyuan Special Building Material Co.Ltd.,Wuhan 430083,China)

机构地区：[1]武汉源锦建材科技有限公司,湖北武汉430083 [2]武汉三源特种建材责任有限公司,湖北武汉430083

出　　处：《新型建筑材料》2021年第4期119-122,126,共5页New Building Materials

基　　金：湖北省知识产权局2018年度高价值专利培育、转化和产业化项目。

摘　　要：研制了有机-无机复合类粉体混凝土防水剂(WUF),并与市场上常用的刚性混凝土结构自防水材料即氧化钙-硫铝酸钙膨胀剂(CSA)、MgO膨胀剂(MEA)、高性能纤维防裂抗渗复合材料(HCM)进行对比,研究了其对混凝土工作性、力学性能及耐久性能的影响,并着重探讨了4种防水材料对混凝土抗渗、抗裂行为影响的差异性。结果表明:对提高混凝土抗渗性能的贡献大小为WUF>MEA>CSA>HCM;对提高混凝土早期抗裂性能的贡献大小为HCM>WUF>MEA>CSA;与未掺防水剂的相比,掺WUF型防水剂后混凝土渗透高度降低了45.6 mm、电通量减少了49.4%、碳化深度亦明显下降。Independently developed a WUF type organic-inorganic composite powder concrete waterproofing agent and the commonly used self-waterproofing materials for rigid concrete structures on the market,namely calcium oxide-calcium sulfoaluminate expansion agent(CSA),MgO expansion agent(MEA),high performance fiber anti-crack and impermeable composite material(HCM)is compared,its influence on the workability,mechanical properties and durability of concrete is studied,as well as,the difference in the influence of four kinds of waterproof materials on concrete impermeability and anti-crack behavior is discussed.The results show that:WUF is better than MEA and CSA and is better than HCM to improve the impermeability behavior of concrete compactness,the contribution to improve the early anti-cracking behavior of concrete is that HCM is better than WUF and MEA is better than CSA,after adding WUF type waterproof agent,the concrete penetration height is reduced by 45.6mm,the electric flux is reduced by 49.4%,and the carbonization depth is also significantly reduced.

关 键 词：刚性材料 结构自防水 抗渗防裂 有机-无机复合 耐久性 

分 类 号：TU572[建筑科学—建筑技术科学]