集料特性对沥青混合料抗剪性能的影响研究

摘要

从集料特性入手，通过单轴贯入试验和三轴压缩试验，研究分析不同集料类型和特性对AC-13沥青混合料抗剪性能的影响规律。研究表明，玄武岩沥青混合料的抗剪性能优于石灰岩，同时，减小集料的针片状颗粒含量、压碎值、磨耗值，提高其棱角性，能够增大沥青混合料的粘聚力和内磨擦角，从而提高沥青混合料的抗剪性能。%Beginning with the aggregate characteristics , this article analyzes the effect of different types and characteristics of aggregate on the shear performance of AC-13 asphalt mixture through the uniaxial penetration test and triaxial compression test .The research shows that the shear properties of basalt asphalt mixture is better than those of limestone and meanwhile the basalt asphalt mixture reduces the acicular content , crushing value as well as abrasion value , and also increases the angularity .Furthermore , the basalt asphalt mixture can improve the cohesion and internal friction angle of asphalt mixture and the shear performance of asphalt mixture as well .