薄层橡胶沥青复合式路面层间抗剪特性试验
Shear resistance test of thin layer rubber asphalt pavement interlayer

为探讨水泥混凝土路面经过洗刷酸洗、刻槽、抛丸等不同加工工艺处理下，不同黏层材料类型、喷洒量、试验温度、水环境、洒布同步碎石等因素对薄层橡胶沥青复合式路面层间界面剪切强度的影响，选择橡胶沥青、SBS改性沥青和AF？？1溶剂型黏结剂作为黏层材料，利用一种改进型路面结构剪切仪研究黏层对刚柔复合式路面层间力学特性的影响。结果表明：40 ℃环境条件下，橡胶沥青及SBS改性沥青作为黏层材料最佳用量为1.2 kg/m？？2,根据不同刻槽工艺，二者用量可增加0.1～0.2 kg/m？？2；界面剪切强度受黏层试验温度、水环境等条件影响，通过剪切试验结果得出，不同黏层材料对界面抗剪切强度由大到小依次为AF？？1溶剂型黏结剂、SBS改性沥青、橡胶沥青；刻槽工艺参数中，刻槽宽度、加密程度及刻槽方向均对层间界面抗剪切强度产生影响，该工艺简单方便，利于推广；酸腐蚀处理、表面洗刷处理、表面洗刷结合酸腐蚀处理等方式对界面细观粗糙度的提高有限；界面污染、浸水等不利条件对界面黏结强度有所影响，其中浸水影响较大；刻槽工艺参数中，刻槽宽度对抗剪能力影响最为显著，在保证刻槽深度情况下，减小槽间距，加密刻槽，可有效提高复合界面抗剪能力；得到层间抗剪强度、层间剪切变形模量与不同变量（界面类型、黏层材料等）之间的线性关系。
In order to investigate the influences of different type of sticky material, spraying amount,test temperature, water environment, synchronous crushed stone of spraying and other factors on the interfacial shear strength of thin layer rubber asphalt composite pavement interlayer after washing and acid pickling, grooving, shot blasting under different processing technologies. The rubber asphalt, SBS modified asphalt and AF？？1 solvent？？based binder as sticky layer material were selected, and a modified pavement structure shear apparatus was used to explore the effect of sticky layer on the mechanical properties of rigid？？flexible composite pavement interlayer. The results show that the optimal dosages of rubber asphalt and SBS modified asphalt are 1.2 kg？m？？？？-2？？ when they are used as sticky layer material at 40 ℃, and the dosages of them can be increased by 0.1 to 0.2 kg？m？？？？-2？？ according to different grooving processes, shear strength is influenced by the temperature of the adhesive layer test, the water environment and other conditions, through shear test results, different the influence of sticky layer materials on the interfacial shear strength is ranked in descending order from AF？？1 solvent？？based adhesive SBS modified asphalt, to rubber asphalt，grooving process parameters, the groove width, the degree of encryption and grooving direction have an impact on the interfacial shear strength between the layers，the craft is simple, convenient, good for promotion, the treatment of acid corrosion, the treatment of surface scrubbing, the acid corrosion mode of combination of washing on surface and other treatment methods have a limited effect on improving the meso？？level roughness of the interface，interface pollution, water immersion and other adverse environmental conditions have influence on the interfacial bond strength, in which the water immersion has a greater effect, have influence on the interfacial bond strength, in which the water immersion has a greater effect; and in the case of ensuring the groove