摘要
利用英国进口的多功能气动沥青材料试验机Cooper NU-14测定了SMA13沥青混合料未经老化、短期老化后和长期老化后马歇尔试件的动态间接拉伸试验参数,分析了影响SMA13沥青混合料抗老化性能的相关因素,并将之与AC13沥青混合料的抗老化性能进行了比较。结果表明,短期老化是沥青混合料老化的主要阶段,沥青膜厚度、矿料级配组成和空隙率对沥青混合料的老化性能有重要影响。
Utiliting cooper NU - 14 （Tester of multi - functional pneumatic asphalt material import from England） detemined the test parameters of dynamic indirect tensile of Marshall specimen before ageing, after short and long ageings, the paper analyzes the correlative factors influencing the ageing - resistance performance of SMA13 asphalt mixture, contrasts it to the ageing- resistance performance of AC13 asphalt mixture. Results indicate that the short ageing is the main stage of asphalt mixture ageing; thickness of asphalt film, eompocition of mineral gradation and porosity have an important influence on ageing of asphalt mixture.
出处
《北方交通》
2009年第7期1-4,共4页
Northern Communications
关键词
道路工程
沥青混合料
动态间接拉伸试验
老化性能
Road engineering
Asphalt mixture
Dynamic indirect tensile test
Ageing performance
