Abstract: A modified asphalt waterproof coatings was prepared by using acrylic emulsion and emulsified asphalt as raw materials，different fineness of heavy calcium carbonate（GCC）and granulated blast furnace slag（GS）as inorganic filler，and adding defoamer，thickener and other additives. In order to explore the effect of GCC/GS composite on the performance of modified asphalt waterproof coatings，the effects were analyzed by measuring the tensile properties，bonding strength，water absorption and low tenderness of the coating with different fineness in different environments，and the influence of the fineness and content of GCC/GS on the performance of waterproof coatings was analyzed. At the same time，the surface morphologyof the coatings prepared with different fineness of GCC and GS mixed in different proportionswas observed by scanning electron microscopy（SEM）. The results showed that the fineness and double blending ratio of GCC/GS had a significant effect on the performance of themodified asphalt waterproof coatings，and the coating performance was better when 600 GCC-A was double-mixed with S95 grade GS-A and w（GS）=12%. 

Key words: asphalt waterproof coatings, inorganic filler, fineness, tensile property, bond

摘要： 以丙烯酸乳液和乳化沥青为树脂基料，以不同细度的重质碳酸钙（GCC）和粒化高炉矿渣粉（ GS）为无机填料，并添加消泡剂、增稠剂等助剂，制备出一种改性沥青防水涂料。探究了 GCC/GS复合对改性沥青防水涂料性能的影响，通过测定不同细度的 GCC和 GS双掺制备的涂层在不同环境中的拉伸性能、黏结强度、吸水率及低温柔度等性能，分析了 GCC/GS复合时其细度及掺量对防水涂料性能的影响。同时，采用扫描电镜（ SEM）观察了不同细度的 GCC和 GS以不同比例双掺时制备的涂层表面微观形貌。结果表明： GCC/GS的细度及双掺比例会对改性沥青防水涂料的性能产生显著影响，当 600目的 GCC-A与 S95级的 GS-A双掺且 w（GS）=12%时涂膜综合性能较好。

关键词: 沥青防水涂料, 无机填料, 细度, 拉伸性能, 黏结强度, 吸水率

CLC Number: 

• TQ635. 55