玄武岩纤维沥青混凝土路用性能研究

Research on Road Performance of Basalt Fiber Asphalt Concrete

为降低路面的初期损害,确保路面的寿命,可在沥青混合料中掺加玄武岩纤维,基于AC-13C型级配,对混合料掺加不同掺量的玄武岩纤维,并采用马歇尔试验找出各个掺量下的最佳油石比,然后进行高温车辙和低温抗裂试验。结果表明,玄武岩纤维最佳掺量为0.3%,且可显著改善混合料的路用性能。

Basalt fiber was added to the asphalt mixture in order to avoid early failure and guarantee the service time of pavement. Based on the gradation of AC-13C, optimum asphalt- aggregate ratios for different amounts of basalt fiber were acquired by the Marshall Test. The rutting test at high temperature and cracking test at low temperature were carried out, and the results show that the optimum amount of basalt asphalt is 0.3%, and basalt asphalt can dramatically improve the road performance.