江西建材Issue(12)：60-62,3.
偏高岭土-石灰改良路基膨胀土拉压强度特性研究
Study on Tensile and Compressive Strength Characteristics of Subgrade Expansive Soil Modified by Metakaolin and Lime
摘要
Abstract
In order to study the relationship between metakaolin content and mechanical properties,the tensile and compressive strength,elas-tic modulus and stress-strain curves of metakaolin and lime improved subgrade expansive soil were studied by unconfined strength test and splitting test.The results show that with the increase of metakaolin content,the optimum water content of expansive soil increases and the dry density decreases.The unconfined stress-strain curve of metakaolinite-lime modified expansive soil has a significant peak value.The compres-sive strength increases with the increase of metakaolin content.When the content of metakaolin exceeds 6%,the increase rate of compressive strength decreases.In short,the optimal content of metakaolin is 6%.The above research provides experience for improving the performance of subgrade expansive soil.关键词
路基工程/偏高岭土/膨胀土/抗压强度/弹性模量Key words
Roadbed engineering/Metakaolin/Expansive soil/Compressive strength/Modulus of elasticity分类
交通工程引用本文复制引用
陈丽平..偏高岭土-石灰改良路基膨胀土拉压强度特性研究[J].江西建材,2024,(12):60-62,3.基金项目
2024年度广西高校中青年教师科研基础能力提升项目《膨胀土膨胀力对工程结构的影响及控制措施研究》(项目编号:2024KY2004). （项目编号:2024KY2004）
