氨基磺酸系高效减水剂表面与分散性能研究  

Study on surface performances of aminosulfonic acid-based superplasticizer

作　　者：蒋新元[1] 邱学青[1] 欧阳新平[1] 杨东杰[1] 

机构地区：[1]华南理工大学化工学院

出　　处：《混凝土》2004年第4期42-44,共3页Concrete

基　　金：广东省科技攻关项目资助课题(2002C1030305)

摘　　要：　本文研究了氨基磺酸系高效减水剂ASP的表面性能和分散性能。结果表明,ASP是一种非引气型高效减水剂,不能降低水的表面张力;它在水泥颗粒表面的吸附量及水泥颗粒的ξ-电位均比萘系减水剂FDN小,但ASP具有比FDN更好的减水分散性能和更高的抗压强度。ASP良好的分散能力是静电斥力和空间位阻共同作用的结果。The Surface and dispersing performances of Aminosulfonic Acid-based Superplasticizer ASP are studied.The results indicate that ASP is a type of non-air entraining superplasticizer and it can not reduce the surface tension of water.It's zeta potential and adsorption amount on the surface of cement are smaller than FDN,but ASP has better dispersing capability than FDN, and the compressive strength of concrete treated with ASP is higher than that treated with FDN.Excellent dispersing performance of ASP is the result of co-action of electrostatic repulsion and steric hindrance.

关 键 词：氨基磺酸系 高效减水剂 表面 分散 机理 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]