氨基磺酸系高效减水剂的表面性能及作用机理研究  

Study on Surface Performances and Action Mechanism 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：《混凝土与水泥制品》2004年第2期9-12,共4页China Concrete and Cement Products

基　　金：广东省科技攻关项目资助课题 (2002C1030305)

摘　　要：试验研究了氨基磺酸系高效减水剂ASP的表面性能、对水泥的减水分散效果和对混凝土的增强作用。结果表明 ,ASP是一种非引气型高效减水剂 ,在水泥颗粒上的吸附量及 ξ-电位均比萘系FDN小 ,但ASP具有比FDN更好的分散性能和使混凝土具有更高的抗压强度。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 performances of Aminosulfonic acid-based Superplasticizer ASP and the effect on the water-reduction (or dispersion) of cement and on the strengthening of concrete are experimentally studied. The results indicate that ASP is a type of non-air entraining superplasticizer, the zeta potential and adsorption amount are smaller than FDN, but it has better dispersing performance and higher compressive strength of concrete. Excellent dispersing performance of ASP is due to the co-action of electric repulsion and steric hindrance, and the excellent dispersing performance and the restraining of cement hydration at early stage lead to concrete having the high compressive strength.

关 键 词：氨基磺酸 高效减水剂 表面牲能 混凝土 抗压强度 

分 类 号：TU528.042[建筑科学—建筑技术科学]