摘要
拜耳法赤泥具有特殊的物理、水理特性,经过改良处理可用于路基填筑。选择石灰、水泥、磷石膏、复合改性材料对赤泥进行化学改良处理,并分析不同改良材料对赤泥击实特性的影响。试验结果表明:不同材料改良赤泥击实特性差异较大,并随着掺加剂量的变化,每种材料改良赤泥的最佳含水率和最大干密度均呈现不同的增减变化趋势,为拜耳法赤泥改良方法的选择和工程应用提供参考。
Bayer-process red mud has special physical and hydraulic properties,can be used for subgrade filling through improved treatment.Lime,cement,phosphogypsum and composite modified materials are selected for chemical improvement of red mud,and the effect of different modified materials on the compaction characteristics of red mud is analyzed.The results shows that different materials have different characteristics in improving red mud compaction,and the optimum moisture content and maximum dry density of red mud improved by each material show different increasing and decreasing trends with the change of dosage.It provides a reference for the selection of improvement methods and engineering application of Bayer red mud.
作者
李彬
孙兆云
杨伟刚
韩兆友
闫翔鹏
Li Bin;Sun Zhaoyun;Yang Weigang;Han Zhaoyou;Yan Xiangpeng(Shandong Hi-speed Company Limited,Jinan 250014,Shandong,China;Shandong Transportation Research Institute,Jinan 250102,Shandong,China)
出处
《岩土工程技术》
2020年第3期174-177,共4页
Geotechnical Engineering Technique
基金
山东省交通科技创新计划(2016B43)。
关键词
拜耳法赤泥
路基工程
化学改良
击实特性
变化趋势
Bayer red mud
subgrade engineering
chemical improvement
compaction characteristics
change tendency
