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防水粘结层不同粘结强度测试方法关联性分析

作者：赵正峰1，褚付克2，张瑞杰3，周珂4，李豪2

关键字：防水,粘结,层,不同,强度,测试,方法,关联性,

　
（1.洛阳市公路事业发展中心洛界高速公路管理处，河南 洛阳  471000；
2.河南省交通规划设计研究院股份有限公司，河南 郑州  450000；
3.洛阳市交通工程质量鉴定站，河南 洛阳  471000；4.河南璟信工程监理有限公司，河南 洛阳  471000）
    摘要：对高粘乳化沥青、水性环氧沥青、橡胶沥青和SBS改性沥青4种不同防水粘结层材料的复合件拉拔强度进行试验；确定4种材料的最佳构造深度分别为0.8、0.8、1.2、0.8 mm，最佳喷洒量分别为0.8、1.0、1.8、1.4 kg/m2。并进行不同温度下的复合件拉拔试验和附着力试验。结果表明：随着温度升高，4种沥青的粘结性能迅速下降，并且复合件拉拔强度下降趋势相同，在35 ℃时失去粘结能力；水性沥青材料的附着力明显低于热沥青，在35 ℃时降至0.1 MPa以下，热沥青在50 ℃时附着力接近于0。构建了复合件拉拔强度和附着力对应关系，以不同温度下的附着力计算复合件拉拔强度具有极高的准确性。
    关键词：防水粘结层；附着力；复合件拉拔强度；构造深度；喷洒量
    中图分类号：TU57        文献标识码：A        文章编号：1001-702X（2022）06-0064-05
 
Correlation analysis of different bond strength test methods for waterproof bonding layer
ZHAO Zhengfeng1，CHU Fuke2，ZHANG Ruijie3，ZHOU Ke4，LI Hao2
（1.Luoyang Highway Development Center Luojie Expressway Management Office，Luoyang 471000，China；
2.Henan Transportation Planning and Design Institute Co. Ltd.，Zhengzhou 450000，China；3.Luoyang Traffic Engineering Quality Appraisal Station，Luoyang 471000，China；
4.Henan Jingxin Engineering Supervision Co. Ltd.，Luoyang 471000，China）
    Abstract：The tensile strength of the composite of high viscosity emulsified asphalt，water-based epoxy asphalt, rubber asphalt and SBS modified asphalt was tested. The optimal structural depths of the four materials were determined to be 0.8，0.8，1.2 and 0.8 mm，and the optimal spraying amounts were 0.8，1.0，1.8 and 1.4 kg/m2，respectively. The results of drawing strength test and adhesion test of composite parts at different temperatures show that：with the increase of temperature，the bonding performance of 4 asphalts decreases rapidly. In addition， the drawing strength of the composite declined with the same trend，and it lost its bonding ability at 35 ℃. The adhesion strength of 0 were obviously lower than that of hot asphalt，and was dropped below 0.1 MPa at 35 ℃，hot asphalt was closed to 0 at 50 ℃. The corresponding relationship was constructed between the drawing strength of composite parts and the adhesion strength，the drawing strength of composite parts was calculated by adhesion strength at different temperature，the calculation result was reliable.
    Key words：waterproof bonding layer，adhesion strength，drawing strength of the composite，structure depth，spray quantity