聚酯纤维沥青混合料路用性能研究及改善机理分析

为了研究聚酯纤维沥青混合料的性能,引入木质素纤维作对比,对两种纤维的技术指标进行检测;通过车辙试验、低温弯曲小梁试验、冻融劈裂试验和四点弯曲疲劳试验对两种纤维沥青混合料及不掺加纤维沥青混合料的路用性能进行研究,并分析其改善机理。研究结果表明掺加纤维能显著地改善沥青混合料的路用性能,且聚酯纤维沥青混合料比木质素纤维混合料具有更优良的路用性能。

Study on Improvement Mechanism and Pavement Performance of Asphalt Mixture with Polyester Fiber

To study the performance of HMA with polyester fiber,polyester fiber is contrasted with lignin fiber.Test was taken on the performance of the two fibers.By the research of rutting test,lowtemperature bending beam test,water stability test,and four point bending beam fatigue test,the pavement performance and the improvement mechanism of asphalt mixture,the asphalt mixture with polyester fiber and the asphalt mixture with lignin fiber were comprehensively analyzed.The test results show that polyester fiber can evidently enhance the performance of the asphalt mixture and the mixture with polyester fiber obtain better performance than the mixture with lignin fiber.