石灰铁尾矿砂稳定土工程特性研究  

Study on Engineering Properties of Lime and Iron Tailings Stabilized Soil

作　　者：方中明 张瑞坤[2,3] 石名磊 FANG Zhongming;ZHANG RuiKun;SHI Minglei(The Highway Construction Place of Nanjing Nanjing,Jiangsu 210078,China;Southeast University,Nanjing,Jiangsu 210096,China;Jiangsu Huang Engineering Consulting Co.,Ltd.,Nanjing,Jiangsu 210018,China)

机构地区：[1]南京市公路建设处,江苏南京210078 [2]东南大学,江苏南京210096 [3]江苏华宁工程咨询有限公司,江苏南京210018

出　　处：《公路工程》2021年第3期142-148,共7页Highway Engineering

基　　金：国家自然科学基金项目(41272312);江苏交通计划项目(2010-13-7)。

摘　　要：对石灰铁尾矿砂稳定土和传统二灰土的物理力学性能进行了对比试验研究,得出了石灰铁尾矿砂稳定土作为路面底基层材料的配合比方案,揭示了石灰铁尾矿砂稳定土的强度形成机理。室内试验和工程检测结果表明:石灰铁尾矿砂稳定土的强度指标随着龄期而增长,满足高等级公路路面底基层的强度要求,其作为路面底基层材料具有良好的适用性。The physical mechanics properties of stabilized soil with lime and iron tailings sand were investigated comparing with the lime and fly ash stabilized soil.The mix ratio of lime and iron tailings stabilized soil as the pavement subbase was brought forward and the strength mechanism of the lime and iron tailings stabilized soil was revealed.Indoor trials and engineering testing results show that:the strength of the lime and iron tailings stabilized soil grows with the age,meets the requirements strength requirements of pavement subbase.So the lime and iron tailings stabilized soil has good applicability as pavement subbase material.

关 键 词：铁尾矿砂 路面底基层 配合比 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]