浅谈轻质填料在路基中的应用

为减少路基沉降，通常采用轻质填料填筑路堤，其中常用的填料有粉煤灰、土工泡沫塑料和泡沫轻质土。通过工程实例，介绍了这3种填料在路堤中的填筑方法，并结合不同路堤高度、不同填料的工后沉降量及工程造价，对工程设计方案进行了比选。

Brief Discussion on Application of Lightweight Filler in Subgrade

Light fillers are usually used to fill the subgrade for reducing the settlement of subgrade. The common fillers are fly-ash, geofoam plastic and foamed lightweight soil. Through an engineering example, the filling methods of the three materials in the embankment are introduced. Combined with the post-construction settlements and engineering costs of the different embankment heights and the different fillers, the engineering design schemes are compared and selected.