一种聚羧酸系高效减水剂的试验研究

主要研究以烯丙醇聚氧乙烯醚、丙烯酸、马来酸酐和甲基丙烯磺酸钠为主要原料的聚羧酸系减水剂的合成工艺,探讨了影响减水剂性能的各种因素,得到最佳工艺条件,并对减水剂的性能进行测试。结果表明,该聚羧酸减水剂具有低掺量、高分散性、高减水率等特点。在掺量为0.25%时,初始水泥净浆流动度达310 mm,减水率高达30.5%,混凝土的抗压强度得到大幅度的提高,适宜配制高性能混凝土。

Experimental Study of Polycarboxylate High Range Water Reducing Agent

This study was focused on preparation technology of the high range water reducing agents of polycarboxylic series with allyl alcohol polyoxyethylene,acrylic acid,maleic anhydride and Sodium methyl acrylamide as the main raw material.Various factors influencing performance of water reducer were exploited and optimum technologies of the water reducer were obtained.Furthermore,tests were made on properties of the reducer.The result shows that this water reducer has the features of small dosage,good dispersibil...