矿粉细度及粉胶比对沥青胶浆力学性能的影响  

Research on Impact of Powder Fineness and Powder-cement Ratio on the Mechanical Properties of Asphalt Rubber Cement

作　　者：游庆龙[1] 吕政桦 覃潇[1] 王晓玉[1] 黄晓凤[1] 孙华磊[1] 

机构地区：[1]长安大学公路学院,西安市710064

出　　处：《公路》2016年第11期204-208,共5页Highway

基　　金：国家自然科学基金项目;项目编号51308064;大学生创新创业训练计划项目;项目编号201410710002

摘　　要：基于沥青胶浆黏弹性基本理论,通过室内试验,研究了在不同温度梯度、不同粉胶比及不同填料细度级配影响因素下,沥青胶浆所体现的黏弹性力学性能。采用5种粉胶比,两种细度级配配制的沥青胶浆,对沥青胶浆在高温、低温下的力学性能进行了试验研究。研究表明:材料选择和环境因素对沥青胶浆流变性能有显著影响,影响程度的大小排序为:温度>粉胶比>矿粉细度,测定沥青胶浆的锥入度、蠕变和黏度指标来表征其力学性能,对沥青混合料性能研究具有重要理论价值和实际工程意义。Based on the basic theory of visco-elastic asphalt cement and through laboratory experiments, the visco-elasticity performance of asphalt mortar is studied under different influence factors of temperature gradients, powder cement ratio and the fineness of different fillers. Asphalt mastic is prepared under five different dust proportion and two degrees fineness, laboratory tests are conducted to study the mechanical properties at high and low temperatures. The result shows that the materials selection and environmental factors have a significant impact on the rheological properties of asphalt mortar, and the impact of the size order is temperature〉 powder-cement ratio〉 fineness. Determination of cone penetration, creep and viscosity index can characterize the rheological properties of asphalt cement, which can provide theoretical and practical significance to asphalt mixture performance study.

关 键 词：矿粉细度 粉胶比 沥青胶浆 黏弹性 

分 类 号：U414.01[交通运输工程—道路与铁道工程]