不同岩性粗集料在沥青路面中的应用

Application of Coarse Aggregates with Different Lithology in Asphalt Pavement

为了揭示不同岩性集料组成的沥青混合料的性能同样能够满足使用功能要求,选取了5种非石灰岩类及石灰岩的集料进行性能指标试验。结果表明:不同岩性的粗集料与沥青的黏附性存在差异,通过适当的措施可以加强其黏附性能;集料岩性并不是沥青混合料选材的主要指标,使用非石灰岩类粗集料的沥青混合料的各项性能同样能满足路面的功能要求。

In order to reveal that the performance of asphalt mixture composed of aggregates with different lithology can also meet the functional requirements,five kinds of non-limestone aggregates and the limestone aggregate were selected for the performance tests.The results show that the adhesion to asphalt of coarse aggregates with different lithology is different,which can be improved by proper measures.Aggregate lithology is not the main index of material selection of asphalt mixture.The performance of asphalt mixture using non-limestone coarse aggregates can also meet the functional requirements of asphalt pavement.