摘要
空隙率是沥青混合料的物理指标之一,其大小及分布对沥青混合科的路用性能产生重大影响。因此研究冻融循环条件下沥青混合料空隙率的变化对寒冷地区沥青混合料的设计具有重要意义。通过对不同级配的沥青混合料做冻融循环试验,分析了在冻融循环过程中空隙率的变化规律及其影响因素。
The porosity is one of physical indexes of asphalt mixture. Its size and distributing condition have great influence on road usage performance of asphalt mixture. Therefore, studying the change of asphalt mixture porosity in freeze - thaw cycle possesses an important significance to design of asphalt mixure in the cold area. Through freeze - thaw cycle test of asphalt mixture in different gradings, the paper analyes the change laws of porosity in the course of freeze - thaw cycle and its influencing factors.
出处
《北方交通》
2007年第5期43-45,共3页
Northern Communications
关键词
冻融循环
沥青混合料
空隙率
Freeze -thaw cycle
Asphalt mixture
Porosity
