水泥混凝土桥面改性环氧树脂防水黏结层性能  

Performance of Modified Epoxy Resin Waterproof Adhesive Layer on Cement Concrete Bridge Surface

作　　者：关永胜[1,2] 韩超[2] 李明俊[3] 闫磊[3] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]江苏省交通科学研究院股份有限公司新型道路材料国家工程实验室,江苏南京211112 [3]陶氏化学(中国)有限公司,上海201203

出　　处：《建筑材料学报》2013年第5期894-897,902,共5页Journal of Building Materials

基　　金：江苏省自然科学基金资助项目(BK2011085);江苏省交通科学研究计划项目(09Y34)

摘　　要：基于45°剪切角的复合试件剪切试验，进行了改性环氧树脂防水黏结层的设计和性能评价．结果表明：改性环氧树脂防水黏结层的剪切强度主要受树脂用量和树脂混合到沥青混合料摊铺之间间歇时间的影响．改性环氧树脂用量宜≥0．6L／m2，玄武岩碎石粒径为1．18～3mm或3～5mm，碎石对防水黏结层表面的覆盖率为90％，24℃下施工间歇时间应小于12h．与其他材料防水黏结层相比，改性环氧树脂防水黏结层具有更好的高温性能、低温抗冻性能和抗疲劳性能，但造价较高，推荐用于裂缝较多的水泥混凝土桥面．Based on shear test of 45° shear angle for composite specimen, modified epoxy resin waterproof adhesive layer was designed and its performance was evaluated. Results indicate that modified epoxy resin content and interval time between the resin mix and the pave of asphalt mixture are the key factors to influ- ence shear strength of modified epoxy resin waterproof adhesive layer. The content of modified epoxy resin should be not less than 0.6 L/m2 , the size of basalt aggregate is 1.18 - 3 mm or 3 - 5 mm, the coverage of basalt aggregate to surface of waterproof adhesive layer is 90%, and the interval time should be less than 12 h at 24 ℃. Compared to other waterproof adhesive layer,modified epoxy resin waterproof adhesive layer has better high temperature performance, frost resistance, fatigue resistance, but higher price. It is recom- mended to be used for cement concrete bridge surface with many cracks.

关 键 词：水泥混凝土桥面 改性环氧树脂 防水黏结层 剪切强度 

分 类 号：U414.01[交通运输工程—道路与铁道工程]