再生沥青路面基面层间剪切疲劳寿命预估

Prediction of Interlayer Shear Fatigue Life of Reclaimed Asphalt Pavement

通过室内剪切试验对比了“两油一料”新型层间处治技术、普通碎石封层及稀浆封层等不同层间处治技术的剪切疲劳特性,分析了不同层间处治技术在不同温度及不同应力水平下的剪切强度变化规律;得到了不同应力水平下各层间处治技术的剪切疲劳寿命,并建立再生沥青路面基面层间剪切疲劳寿命预估模型,实现在剪应力已知的情况下,通过预估模型预估不同层间处治技术的剪切疲劳寿命。

The shear fatigue characteristics of different interlayer treatment technologies, such as "two oil and one material" new interlayer treatment technology, ordinary gravel sealing layer and thin slurry sealing layer, are compared through laboratory shear tests. The shear strength variation of different interlayer treatment technology under different temperatures and different stress levels is analyzed. The shear fatigue life of the treatment technology between layers under different stress levels was obtained, and the prediction model of the shear fatigue life between layers of the reclaimed asphalt pavement base surface was established to predict the shear fatigue life of the treatment technology between layers under the condition of known shear stress.