市政技术2024，Vol.42Issue(3)：18-27,10.DOI:10.19922/j.1009-7767.2024.03.018
聚氨酯类钢桥面铺装中防水粘结层抗剪性能研究
Shear Resistance Performance of Waterproof Adhesive Layer of Polyurethane Steel Bridge Deck Pavement
摘要
Abstract
Polyurethane steel bridge deck pavement material has excellent comprehensive road performance,whose application is expected to solve the problems of poor durability and short service life of traditional asphalt steel bridge deck pavement material under the harsh environment of steel bridge.However,there is little research on the appro-priate waterproof adhesive layer material.Therefore,under polyurethane paving layer,the shear strength test of two kinds of waterproof adhesive layer materials(polyurethane adhesive and epoxy resin adhesive)was carried out.The changing law of interlayer shear properties of the structure was analyzed under the influence of waterproof adhesive coating amount,layer material,gravel spreading amount and curing time.The results show that the shear resistance of the polyurethane waterproof adhesive layer is significantly better than that of the epoxy resin waterproof adhesive layer.That increasing the coating amount of waterproof adhesive layer can increase the bonding area of the interface.But too thick coating will cause decrease of the shear strength after the peak;The shear strength of the specimen with dry waterproof adhesive layer is the best and the one without dry is the worst;The gravel spreading amuont will also affect the shear strength of waterproof adhesive layer,so the amount should be reduced under the satisfying construction conditions.关键词
聚氨酯/钢桥面铺装/防水粘结层/抗剪性能Key words
polyurethane/steel bridge deck pavement/waterproof adhesive layer/shear resistance分类
交通运输引用本文复制引用
欧子蘅,范钟亓,代一诺,叶宇杰,吕欣芃..聚氨酯类钢桥面铺装中防水粘结层抗剪性能研究[J].市政技术,2024,42(3):18-27,10.基金项目
国家自然科学基金项目(51978035,52278425) （51978035,52278425）
