泡沫水泥轻质土在软土路基处理中的应用

The Application of Foam Cement Light Soil in the Treatment of Soft Subgrade

针对某高速公路软弱路基处理的问题,比较了采用泡沫水泥轻质土、粉煤灰、水泥搅拌桩和预应力桩4种方案的优劣,并且介绍了泡沫水泥轻质土的工程特点、施工工艺等。通过比较分析得到:泡沫水泥轻质土在工程性能、造价、工期等方面均具有优越性;实体工程观测表明,采用泡沫水泥轻质土换填后7个月起,路基沉降曲线趋于平稳,且沉降量接近1~2 mm,具有较好的工程应用价值。

For the problem of a highway weak subgrade treatment, this paper compared the advantages and disadvantages of four schemes that using foam cement light soil, fly ash, cement mixing pile and prestressed pile. It also introduced the engineering characteristics and construction technology, etc. of foam cement light soil.