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为了探讨凝灰岩在高速公路沥青路面沥青混合料中的合理利用形式,开展室内试验,对比了凝灰岩、玄武岩和石灰岩集料的物理力学性能指标,对比了不同类型、不同沥青、不同岩性集料组合情况下沥青混合料的高低温和水稳定性能。结果表明:在凝灰岩颗粒形状规则、洁净的情况下,除低标号沥青混合料外,凝灰岩沥青混合料的路用性能都满足我国规范的要求;与常用岩性集料沥青混合料相比,采用凝灰岩与其他集料混掺时沥青混合料的综合路用性能有所改善。
In order to explore the reasonable utilization form of tuff in asphalt mixture of asphalt pavement, indoor experiments were carried out to compare the physical and mechanical properties of tuff, basalt and limestone aggregates. Comparisons of different types, different bitumen, Asphalt mixture under high and low temperature and water stability. The results show that with the regular and clean tuff particle shape, the road performance of tuff asphalt mixture meets the requirements of our country except low-grade asphalt mixture. Compared with common lithology aggregate asphalt mixture, Asphalt mixed with other aggregate mixed asphalt road performance improved.