尼日利亚公路下面层沥青混合料配合比设计及施工组织
Mix Ratio Design and Construction Organization of Asphalt Mixture for the Lower Surface Layer of Nigerian Highways
吴涛1
作者信息
- 1. 中交四航局第一工程有限公司,广东 广州 510450
- 折叠
摘要
为了探究适用于尼日利亚的沥青路面下面层混合料配合比设计和施工组织,以尼日利亚马拉巴至凯菲道路修复项目为依托,通过检测原材料的性能指标,开展下面层沥青混合料的目标配合比和生产配合比设计,测试了两种配合比沥青混合料的体积指标和路用性能,提出了施工组织方案,并通过检验试验路段下面层沥青混合料的油石比和级配,验证了其适用性.结果表明:下面层沥青混合料的最佳油石比为4.7%,根据目标配合比和生产配合比所制备的沥青混合料满足尼日利亚的规范要求,试验路段的油石比与最佳油石比相符,筛分曲线与级配曲线基本一致.
Abstract
In order to explore the mix ratio design of asphalt mixture and construction organization of asphalt pavement lower surface layer suitable for Nigeria,the performance indicators of raw materials were tested based on the Malaba-Keffi road repair project in Ni-geria.The target mix ratio design and production mix ratio design of asphalt mixture for the lower surface layer were conducted.The vol-ume indexes and road performance of the two mix ratio design asphalt mixtures were measured,and the construction organization plan was proposed.The applicability was verified by inspecting the asphalt-aggregate ratio and gradation of the test section of the lower sur-face layer asphalt mixture.The results show that the optimal asphalt-aggregate ratio for the lower surface layer asphalt mixture is 4.7%.The asphalt mixture prepared according to the target mix ratio design and production mix ratio design meets the specifications of Nigeria.The asphalt-aggregate ratio of the test section is consistent with the optimal asphalt-aggregate ratio,and the screening curve is basically consistent with the gradation curve.
关键词
道路工程/沥青路面下面层/沥青混合料/配合比设计/施工组织Key words
road engineering/lower surface layer of asphalt pavement/asphalt mixture/mix ratio design/construction organization引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据