SMA沥青混合料均匀性和路用性能研究

Research of uniformity and road performance of SMA mixture

选用木质素纤维、矿物棉纤维和短切矿物纤维,通过室内试验,对比分析了掺加以上三种不同纤维的SMA沥青混合料的均匀性及路用性能,对比试验结果表明:掺加矿物棉纤维和木质素纤维后,SMA混合料表现出良好的均匀性;掺加短切矿物纤维的SMA混合料的高温稳定性能较好,水稳性能较差;纤维沥青混合料的均匀性在一定程度上影响其路用性能。

This article selected the lignin fiber,short cut mineral fiber and mineral cotton fiber,through the indoor test analyzed the uniformity and road performance of SMA mixture that added above three kinds of different fibers. Contrast test results show that： after adding mineral cotton fiber and lignin fiber,the uniformity of SMA mixture showed good,adding chopped mineral fiber,SMA mixture has better high temperature stability and poor water stability performance,the uniformity of the fiber asphalt mixture had a certain extent affect to the road performance.