地质与勘探2025，Vol.61Issue(3)：615-623,9.DOI:10.12134/j.dzykt.2025.03.017
水泥、石灰及复合改良剂对高含水率黏土的改良效果对比:以宁古高速C1工程段为例
Comparison of Improvement Effects of Cement,Lime,and Composite Modifiers on High-Water-Content Clay:A Case Study of the C1 Section of the Ninggu Expressway
摘要
Abstract
To improve the compaction degree of high-water-content clay in the Cl section of the Ninggu Expressway,indoor improvement tests were conducted using lime,cement,and composite modifiers.The improvement effects of the three modifiers on the soil were studied through compaction tests,CBR tests,unconfined compressive strength tests,and water stability tests.Based on the characteristics of the project,an improvement scheme was recommended.The test results show that the composite modifier can increase the optimum water content of high-water-content clay.When the modifier content is 5%,the optimum water content of the improved soil is 15.6%.The composite modifier can significantly reduce the water content of high-water-content clay,with a reduction close to or exceeding 3%.When the compaction degree is 93%,the improved soil with composite modifier can meet the compaction requirements when the soil water content is around 25%.Cement has a moderate improvement effect on the soil,but it can effectively enhance the soil strength,and the water stability of the cement-improved soil is the highest among the three types of improved soils.The water stability of lime-improved soil is poor,making it unsuitable as a modifier for this project.It is recommended to use a 5%composite modifier for on-site soil treatment.关键词
路基工程/黏土/压实度/含水率/水稳性/改良剂/宁古高速Key words
subgrade engineering/clay/compaction degree/moisture content/water stability/modifier/Ninggu expressway分类
建筑与水利引用本文复制引用
张旺兴,薛超,刘霖,邵吉成,姜志全,李云浩..水泥、石灰及复合改良剂对高含水率黏土的改良效果对比:以宁古高速C1工程段为例[J].地质与勘探,2025,61(3):615-623,9.基金项目
国家自然科学基金面上项目"高温冻土的细观破损机制与宏-细观本构模型"(编号:41771066)资助. （编号:41771066）
