高速公路基层裂缝和压实度超百控制新技术  

The New Control Technology of Base Course Cracks and Compactness over 100% in Expressway

作　　者：朱文汇[1] 黄兆利 尚付民 

机构地区：[1]中国建筑第二工程局有限公司,北京100054 [2]中建二局土木工程有限公司,北京101101

出　　处：《施工技术》2011年第12期40-42,共3页Construction Technology

摘　　要：结合郑州—洛阳高速公路改扩建工程,介绍了路面基层施工现状及存在的问题,深入分析了压实度超百的原因及其危害,以及水泥稳定碎石基层裂缝产生原因及其危害;提出了解决问题的具体措施,包括采用振动成型法确定混合料最大干密度、最佳含水量,基层混合料采用骨架密实型结构替代悬浮密实型结构,以及防止骨架密实型结构离析的技术措施。有效解决了基层施工过程中存在的基层裂缝和压实度超百问题,降低了沥青混凝土路面早期破坏的隐患。Based on reconstruction and extension project in Zhengzhou to Luoyang Expressway,the authors introduce current construction state and existing problems,deeply analyze the reason and harm of compactness over 100%,the reason and harm of base course crack with cement stabilized macadam.In addition,the authors propose specific measures,including determining maximum dry density of mixture and optimum water content by vibratory molding method,using dense framework structure to replace suspended dense structure for base mixture,preventing segregation of dense framework structure.The problems about base course crack and compactness over 100% are solved effectively during base construction,the early damage of asphalt concrete pavement reduces.

关 键 词：道路工程 裂缝 压实度 骨架密实 振动成型 

分 类 号：U416.2[交通运输工程—道路与铁道工程]