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Interlaminar Bonding Properties on Cement Concrete Deck and Phosphorous Slag Asphalt Pavement

机译：水泥混凝土桥面和磷渣沥青路面的层间粘结性能

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摘要

The slippage damage caused by weak interlaminar bonding between cement concrete deck and asphalt surface is a serious issue for bridge pavement. In order to evaluate the interlaminar bonding of cement concrete bridge deck and phosphorous slag (PS) asphalt pavement, the shear resistance properties of the bonding layer structure were studied through direct shear tests. The impact of PS as a substitute of asphalt mixture aggregate, interface characteristics, normal pressure, waterproof and cohesive layer types, temperature and shear rate on the interlaminar bonding properties were analyzed. The test results indicated that the interlaminar bonding of bridge deck pavement is improved after asphalt mixture fine aggregate was substituted with PS and PS powder, and the result indicated that the shear strength of grooved and aggregate-exposed interfaces is significantly higher than untreated interface, the PS micro-powder or anti-stripping agent can also improve the adhesion between layers when mixed into SBS asphalt. This study provided important theoretical and practical guidance for improving the shear stability of bridge deck pavement.
机译：水泥混凝土面板与沥青表面之间薄弱的层间粘结引起的滑移损坏是桥梁路面的一个严重问题。为了评估水泥混凝土桥面板与磷渣（PS）沥青路面的层间粘结，通过直接剪切试验研究了粘结层结构的抗剪性能。分析了PS替代沥青混合料集料，界面特性，常压，防水和粘结层类型，温度和剪切速率对层间粘结性能的影响。试验结果表明，用PS和PS粉代替沥青混合料细骨料后，桥面铺装的层间粘结得到改善，结果表明，开槽和骨料暴露的界面的抗剪强度明显高于未处理的界面。当与SBS沥青混合时，PS微粉或防剥离剂还可以改善层之间的附着力。该研究为提高桥面铺装的剪切稳定性提供了重要的理论和实践指导。

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