含不同结构单元共聚羧酸高效减水剂的应用研究

Application of Co-Poly Carboxylic Acids with Various Side-chain Groups as Superplasticizer

介绍了多种共聚羧酸系列混凝土高效减水剂在混凝土中的应用特性 ,对混凝土的坍落度保持性、减水率、抗压强度等进行了研究 .在混凝土中掺加 0 .6%～ 0 .75%的共聚羧酸系列产品 ,最高减水率可达 3 0 % ,混凝土的 2 8d强度可提高 3 0 %～ 50 % .

In this article, application characteristics of several kinds of co-poly carboxylic acids superplasticizer in concrete are introduced. Concrete slump, water-reducing ratio, compressive strength and so on are also investigated. The highe stwater-reducing ratio of concrete with 0.6%～0.7%(solid) co-poly arboxy lic acid products can reach as high as 30%, and compressive strength in 28 dayscanincrease by 30%～50%.