橡胶沥青应力吸收层疲劳性能研究

Study on Fatigue Performance of Rubber Asphalt Stress Absorbing Interiayer

随着半刚性基层沥青路面在我国的普遍应用,路面反射裂缝已经成为沥青路面损害的重大难题,目前行之有效的解决手段是在路面结构中加铺应力吸收层来延缓反射裂缝。作为应力吸收层的混合料,要在疲劳性能、高温性能及层间抗剪强度三方面较为平衡;橡胶沥青混合料的高温性能和抗剪强度在工程实践中已经得到普遍认可,故针对橡胶沥青应力吸收层的疲劳性能展开研究,分析确定影响其疲劳寿命的关键因素,为提高橡胶沥青混合料疲劳寿命提供参考,使其可以广泛应用。

With widely using of semi-rigid base asphalt pavement in China,reflective crack has become a big problem in asphalt pavement. At present,a effective solving method is using stress absorbing anti-cracking interlayer.Stress absorbing interlayer should balance fatigue performance,high-temp performance and interface shearing strength of the asphalt mixture.Rubber asphalt mixture has been domontrated excellent high-temp perfomance and shearing strength,this paper focus on the fatigue performance and its key factor. These will give referrence to enhance the fatigure performance of rubber asphalt mixture and widely application in future.