泡沫轻质土在高速公路路基拓宽中的应用.pdf

建 筑 技 术 开 发 道路桥梁 49 6 第 卷第 期 Building Technology Development Roads and Bridges 2022年3月 泡沫轻质土在高速公路路基拓宽中的应用 拓　晶 （四川省公路规划勘察设计研究院有限公司，成都　610000 ） ［ ］  　　 摘　要 泡沫轻质土在公路工程中具有良好的应用效果和极高的应用价值，高速公路路基拓宽施工中 采取泡沫轻质土，作为新型的轻质路堤法，其原理是将发泡剂水溶液制备成泡沫，并按照适量的比例与骨 料、凝胶材料以及外加剂充分混合，形成一种特殊的轻质材料。此种轻质材料的特点显著，具备施工方便、 环保以及节约费用等优势。以四川某高速公路安检站改造工程为例，主要阐述了泡沫轻质土在公路工程中的 应用优势及泡沫轻质土在高速公路路基拓宽中的施工要点。 ［ ］  　　 关键词 泡沫轻质土；高速公路；路基拓宽      1001 523X 2022 06 0121 03 　　［中图分类号］U 416.1 ；TU 521.3　　　［文献标志码］A　　　　［文章编号］ - （ ） - - APPLICATION OF FOAMED LIGHTWEIGHT SOIL IN HIGHWAY SUBGRADE WIDENING Tuo Jing Abstract   　　［ ］Foamed lightweight soil has good application effect and high application value in highway engineering. The lightweight soil is applied in the widening of expressway roadbed. The lightweight soil is prepared by preparing foaming agent aqueous solution into foam, mixing it with aggregate, gel material and admixture in proper proportion. The lightweight material has remarkable characteristics and has the advantages of convenient construction, environmental protection and cost saving. Taking the reconstruction project of a highway safety inspection station in Sichuan as an example, the paper mainly expounds the application advantages of foamed lightweight soil in highway engineering and the construction points of foamed lightweight soil in highway subgrade widening. Keywords   　　［ ］foamed lightweight soil ；highway ；subgrade widening 高速公路路基拓宽施工中泡沫轻质土是新型的施 需要花费较多的时间才能完成材料运输工作，保证工 工材料，通过物理方法将其制备成泡沫，形成一