石灰改性黄土在山区公路路基工程中的应用

Discussion on application of lime modified loess in highway subgrade engineering in mountainous area

黄土地区山区公路路基沉降是最为常见病害之一,并影响路面及构造物耐久性和稳定性,通过石灰改性黄土对路基进行换填,不但材料轻质降低路基自重,而且减轻运营期间的养护维修工作,是山区公路建设的一项重要工程措施。本文就石灰土改性黄土强度的形成机理及增加强度特性的方法进行分析说明。

The roadbed settlement in mountainous area is one of the most common diseases in loess area. It affects the durability and stability of pavement and structure. The roadbed is replaced by lime-modified loess,which not only reduces the dead weight of roadbed,but also reduces the maintenance during operation. Maintenance work,is a mountainous highway construction is an important engineering measures. In this paper,the formation mechanism of the lime soil-modified loess strength and the method to increase the strength characteristics are analyzed.