水泥基防水涂料中低钙粉煤灰活化性能研究  

Study of Activation Properties of Low Calcium Fly Ash in Cement-Based Waterproof Coating

作　　者：唐酞峰[1] 

机构地区：[1]攀枝花学院生物与化学工程学院,四川攀枝花617000

出　　处：《建筑材料学报》2010年第4期540-544,共5页Journal of Building Materials

基　　金：攀枝花市2007年科研计划项目(攀科高2007CY-G-7-5)

摘　　要：以攀枝花电厂低钙粉煤灰为原料,制备了高粉煤灰掺量的水泥基防水涂料.试验对比分析了粉煤灰表面改性、化学激发对涂料性能的影响,对比分析了不同化学激发剂对粉煤灰的活化效果,同时对活化机理进行了微观分析.结果表明:表面改性粉煤灰涂料抗渗压力比原灰涂料提高了67%,比化学激发粉煤灰涂料提高了25%;表面改性+化学激发粉煤灰涂料抗渗压力比原灰涂料显著提高;表面改性+化学激发粉煤灰涂料15d抗压强度、抗折强度、抗渗压力和抗渗压力比均高于GB18445—2001《水泥基渗透结晶型防水涂料标准》的28d值.Low calcium fly ash of Panzhihua power plant was applied as raw material to prepare cement-based waterp roof coating.Impacts of the surface modification and chemical activation of fly ash on the performance of coating and activation effect of different activator were compared.At the same time,the experiment has conducted micro-XRD,SEM ana lysis for the activation mechanism.The results show that：after fly ash surface modification,the impermeable pressure of coating has increased 67% more than th at of coating with original ash,25% more than that of coating with fly ash activated by chemical activator.After both surface modification and chemical activation for fly ash,the impermeable pressure of the coating has significantly improved.The 15d compressive strength,flexural strength,impermeable pressure,as well as the impermeable pressure ratio of coatings with fly ash activated by both surface modification and chemical activation are higher than those of the GB 18 445—2001 standard 28d value.

关 键 词：低钙粉煤灰 表面改性 化学激发 水泥基防水涂料 

分 类 号：TU57[建筑科学—建筑技术科学]