超薄磨耗层混合料设计及施工关键技术研究
Research on Key Technologies for Design and Construction of Ultra-thin Wearing Layer Mixture
陈娥梅 1闵建刚 1李红顺 1张磊 1廖启 1宁月湖1
作者信息
- 1. 曲靖市交通建设投资集团有限公司,云南曲靖 655000
- 折叠
摘要
为提升超薄磨耗层沥青混合料的路用性能,完善超薄磨耗层路面施工工艺,研究面向工程实际需求,利用主骨料空隙填充法(CAVF)进行超薄磨耗层混合料的配合比优化设计,并依托麒师公路建设工程,提出超薄磨耗层的成套施工关键技术.结果表明:基于CAVF法获取了超薄磨耗层GT-8的合成配比,计算确定5～8 mm、3～5 mm和0～3 mm三档集料的掺配比为58.45:19.49:19.06,最佳沥青用量为7.9％;依据室内试验和工程经验,提出了涵盖施工准备、混合料生产与运输、混合料摊铺和压实等在内的超薄磨耗层关键施工工艺;通过施工路段检测评验,超薄沥青磨耗层GT-8具有优良的抗滑性、密水性和平整度,超薄磨耗层技术应用取得良好的施工质量与效果.
Abstract
In order to improve the pavement performance of ultra-thin wearing layer asphalt mixture and improve the construction technology of ultra-thin wearing layer pavement,oriented to the actual needs of project,the main aggregate void filling method(CAVF)is used to optimize the mix ratio of ultra-thin wearing layer mixture.Based on the Qishi Highway Construction Project,a complete set of key construction technology for the ultra-thin wearing layer is proposed.The results show that GT-8 synthetic ratio of ultra-thin wearing layer is obtained based on CAVF method.The mixing ratio of 5～8 mm,3～5 mm and 0～3 mm aggregates is 58.45:19.49:19.06.The optimum asphalt content is 7.9％.According to the laboratory test and engineering experience,the key construction technologies of ultra-thin wearing layer including the construction preparation,mixture production and transportation,mixture paving and compaction are put forward.Through the inspection and evaluation of the construction section,the ultra-thin asphalt wearing layer GT-8 has the excellent skid resistance,water tightness and flatness.The application of ultra-thin wearing layer technology has achieved the good construction quality and effect.
关键词
沥青超薄磨耗层/CAVF法/级配设计/施工技术/路用性能Key words
asphalt ultra-thin wearing layer/CAVF method/gradation design/construction technology/pavement performance引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据