水泥就地冷再生技术在旧路改造工程中的应用  

Application of Cement In-situ Cold Recycling Technology in Old Road Reconstruction Project

作　　者：杨玉庆 董战霞[1] YANG Yuqing;DONG Zhanxia(Engineering Construction Center,Henan Yellow River Affairs Bureau,Zhengzhou Henan 450002)

机构地区：[1]河南黄河河务局工程建设中心,河南郑州450002

出　　处：《河南科技》2021年第2期108-111,共4页Henan Science and Technology

基　　金：河南黄河河务局“黄河下游堤顶道路水泥就地冷再生关键技术研究”(YHHDDDLJSYJ2017-1)。

摘　　要：水泥就地冷再生技术可循环利用旧路铣刨料并减少环境污染,具有重要的推广价值。本文通过分析旧路铣刨料特征,综合对比粗、中、细三种不同级配类型的再生混合料不同性能指标,优选再生混合料配合比。结果表明,旧路铣刨料中可添加10~30 mm碎石和石屑改善级配;中级配综合路用性能最佳,可作为优选级配;水泥就地冷再生技术的工程应用中,各项性能指标均满足要求,其应用效果良好。Cement in-situ cold recycling technology can recycle old road milling materials and reduce environmental pollution,which has important promotion value.This paper analyzed the characteristics of old road milling materials,comprehensively compared the different performance indicators of the three different gradation types of coarse,medi⁃um,and fine recycled mixtures,and optimized the ratio of recycled mixtures.The results show that 10~30 mm crushed stones and stone chips can be added to the old road milling material to improve the gradation;the middle gra⁃dation has the best comprehensive road performance and can be used as the optimal gradation;in the engineering ap⁃plication of cement in-situ cold recycling technology,all performance indicators meet the requirements,and its appli⁃cation effect is good.

关 键 词：旧路改造 水泥就地冷再生 配合比设计 工程应用 

分 类 号：U418.8[交通运输工程—道路与铁道工程]