CPA-1A 型泵送剂原理及对混凝土可泵性的改进  

THE PRINCIPLE OF THECPA-1A PUMPING AID AGENT AND IMPROVEMENT FOR CONCRETE PUMPABILITY

作　　者：方理刚[1] 

机构地区：[1]冶金工业部长沙矿冶研究院

出　　处：《工业建筑》1997年第11期45-49,共5页Industrial Construction

摘　　要：实验室和现场试验的结果表明，通过增加混凝土的流动性和内部粘聚性，降低泌水和离析倾向，ＣＰＡ－１Ａ型泵送剂能将水泥含量和砂率低的贫混凝土变为可泵送混凝土。加入泵送剂后，泵送阻力损失降低５０％左右。在等强度条件下，掺ＣＰＡ－１Ａ型泵送剂的混凝土的成本比不掺任何外加剂或掺其它泵送剂的混凝土成本至少低３６％。The results of laboratory and site studies showed that by increasing flow and internal cohesive properties, decreasing bleeding and segregation, the CPA-1A pumping aid agent could change the lean concrete or marginally pumpable concrete into readily pumpable concrete Pumping pressure and line-pressure-loss of the concrete with the pumping aid agent was about 50% smaller than the concrete without any admixtures The cost of the concrete with the pumping aid agent is at least 36% lower than those ones with other pumping aid agents and without any admixtures

关 键 词：泵送剂 原理 可泵性 混凝土 泵送混凝土 

分 类 号：TU528.02[建筑科学—建筑技术科学] TU528.53