纤维改良橡胶应力吸收层性能研究

Study on the Performance of Fiber Modified Rubber Asphalt Seal

橡胶沥青吸收层作为公路路面结构的重要组成部分,其性能直接关系到公路的使用寿命、安全性和经济效益。文中结合福建某景区旅游主干道提升工程,通过室内模型试验设置多组正交试验,探究了纤维改良橡胶沥青封层的阻裂性能、吸收层的层间结合能力和抗疲劳性能。结果表明:橡胶沥青用量对抗拉性能影响最大,纤维含量次之,纤维长度最小;橡胶沥青用量对层间剪切性能影响最大,碎石含量和纤维用量次之,纤维长度最小。

As the main protective layer of highway surface,the performance of rubber asphalt seal is directly related to the service life,safety and economic benefits of highway.Therefore,based on a highway reconstruction project,this paper sets up multiple sets of orthogonal tests through indoor model tests to explore the crack resistance of fiber-modified rubber asphalt seal,the interlayer bonding ability and fatigue resistance of the absorption layer.The results show that the amount of rubber asphalt has the greatest influence on the tensile properties,followed by the fiber content and the fiber length.The amount of rubber asphalt has the greatest influence on the interlayer shear performance,followed by the gravel content and fiber content,and the fiber length is the smallest.