矿料级配对沥青混合料路用性能影响的试验分析  

Experimental Analysis on Effect of Aggregate Gradation on Pavement Performance of Asphalt Mixture

作　　者：彭浩[1] 王福成[1] 杨涛[1] 艾长发[1] 

机构地区：[1]西南交通大学道路工程四川省重点实验室,四川成都610031

出　　处：《公路工程》2013年第2期36-39,64,共5页Highway Engineering

基　　金：四川省交通厅科技项目(SC2008.1-3-1);中央高校基本科研业务费专项资金项目(SWJTU12ZT05)

摘　　要：以典型的AC—13沥青混合料为基础,通过系统室内对比试验,对5组由粗到细级配的沥青混合料的基本物理性质、高温稳定性、低温抗裂性、水稳定性、疲劳耐久性等路用性能进行了研究。试验结果表明,级配变化对沥青混合料路用性能有直接的影响,且存在一定的规律性,总体表现为靠近规范级配中值附近其综合性能较好;不同级配类型的沥青混合料路用性能的优点表现不一样,粗级配更有利于抗高温变形的提高,细级配更有利于抗水损害、抗弯拉破坏、抗疲劳开裂等性能的提高。研究成果为沥青混合料级配选择和优化设计提供参考。Based on the typical AC-13 asphalt mixture, some basic physical properties and some pavement performance of asphalt mixtures, such as the high temperature stability, low-temperature crack resistance, water stability and fatigue durability, were tested according to the comparison tests included five types of asphalt mixture from coarse-graded to fine-graded. The experimental results show that the different gradations had a great impact on the pavement performance of asphalt mixtures and the median gradation had better comprehensive performance generally. And also the different gradation had different advantages, such as the coarse-graded asphalt mixture was benefit for the improvement of anti-distortion in high temperature, while the fine-graded was benefit for the improvement of anti-water damage, anti- flexural-tensile damage and anti-fatigue cracking. The research results also can be used for reference dur- ing the gradation selection and optimization design of asphalt mixtures.

关 键 词：沥青混合料 级配 路用性能 空隙率 

分 类 号：U414.1[交通运输工程—道路与铁道工程]