泵送防水混凝土结构施工  

Construction of Pumped Waterproof Concrete

作　　者：苏振邦[1] 耿德龙 吴金梁[1] 

机构地区：[1]沈阳农业大学水利学院,沈阳市和平区房产局

出　　处：《沈阳农业大学学报》1996年第2期162-165,共4页Journal of Shenyang Agricultural University

摘　　要：泵送混凝土要求有较大的流动性，水灰比较大；而某些防水要求较高的混凝土，要求混凝土有较小的水灰比，流动性较小。如何使混凝土既具有可泵性，又有较高的抗渗性，是施工中亟待解决的问题。施工中采用改善骨料级配，掺用ＵＥＡ混凝土膨胀剂、ＲＣ—１高效减水剂，严格控制施工质量，施工缝设钢板止水带及模板拉杆设钢板止水环等措施，较好地解决了这一矛盾。Pumped concrete requires a large fluidity with a high ratio water to cement.Whilesome concrete with high waterproof quality equirements a small ratio of water tocement.How to make the concrete to be pumped to have a high impermeability is anurgent quesiton.This contradiction was solved by improving the gradation of aggregates,addingUEA concrete expansion agent and RC--1 high effective water--reducing agent,strictlycontrolling the construction quality, installing steel plate water stop in the construction joint andsteel plate water ring on the fom tie rod.

关 键 词：混凝土 强度等级 混凝土抗渗标号 结构自身防水 

分 类 号：TU755[建筑科学—建筑技术科学]