沥青稳定碎石混合料的抗剪性能  

Anti-shearing performance of asphalt treated base mixtures

作　　者：贾锦绣[1,2] 韩森[1] 徐鸥明[3] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]西安市市政设计研究院,陕西西安710068 [3]长安大学材料科学与工程学院,陕西西安710061

出　　处：《长安大学学报（自然科学版）》2009年第3期23-26,共4页Journal of Chang’an University(Natural Science Edition)

基　　金：陕西省交通科技项目(05-05K)

摘　　要：为了评价沥青稳定碎石混合料的抗永久变形能力,通过对三轴受力模型进行分析、简化,利用无侧限抗压强度试验和劈裂强度试验,对沥青稳定碎石混合料的力学性能和抗剪强度参数进行研究。结果表明:随公称最大粒径、粗集料含量的增大,内摩擦角增大,而粘聚力减小;提高结合料粘度可以明显提高粘聚力,而对内摩擦角影响不大;采用基于无侧限抗压强度试验和劈裂强度试验得到的抗剪强度参数,可以用于沥青稳定碎石混合料设计。In order to estimate the ability of resistance to permanent deformation for asphalt treated base mixtures, this paper analyzes the force model for triaxial tests and simplifies it. By using unconfined compressive strength test and splitting strength test, it studies the mechanics performance and anti-shearing strength parameters of asphalt treated base mixtures. The results show that internal friction angle will increase with increase of nominal maximum size or content of coarse aggregate, but cohesive force will reduce. Enhancing the viscosity of binder can improve the cohesive force obviously, but it has little effect on the internal friction angle. So anti-shearing strength parameters based on unconfined compressive strength test and splitting test, can be used for estimating design of the anti-shearing performance of asphalt treated base mixtures. 2 tabs, 7 figs, 9 refs.

关 键 词：道路工程 沥青稳定碎石混合料 力学性能 抗剪强度 粘聚力 内摩擦角 

分 类 号：U414.75[交通运输工程—道路与铁道工程]