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通过环氧树脂、SBS改性乳化沥青、SBS改性热沥青和H#桥面防水材料等4种粘结层材料组合试件的剪切试验,对影响排水性路面的行车荷载、温度和水等外部因素进行了研究和分析.试验结果表明,温度升高会造成层间结合能力的降低,层间剪切强度与温度之间的关系接近一条对数曲线.在实际路面中,行车荷载作用中心区域下的剪切强度较其他部位要小.冻融和饱水等水损害都明显地降低了路面抗剪强度,破坏了上中面层间的层间结合.荷载、温度和水等因素的作用会对层间结合状况产生一定的不利影响,需要通过优选粘结层材料来提高排水性路面的耐久性.
The shear tests of four kinds of bonding layer materials such as epoxy resin, SBS modified emulsified asphalt, SBS modified hot asphalt and H # bridge deck waterproofing material were carried out on the load, temperature and water And other external factors were studied and analyzed.The experimental results show that the increase of temperature will lead to the decrease of the bonding ability between layers and the relationship between the interlaminar shear strength and temperature is close to a logarithmic curve.In the actual road surface, The shear strength under the central area is smaller than that of other parts.The water damage such as freezing and thawing and water saturation all obviously reduce the shear strength of the pavement and destroy the interlayer combination between the upper and middle layers.The factors such as load, temperature and water Will detrimentally affect the condition of the interlaminar bond, and the durability of the drainage pavement needs to be improved by the preferred bonding layer material.