摘要
膨胀土不能直接作为路基填料,必须经过换填或改良处理,以达到增加路基强度和提高水稳性的目的,保证路基稳定、耐久。结合膨胀土路基物理性质的特点,通过利用施工现场的弱、中膨胀土与非膨胀土填料进行合理拌合,改变其物理性质,使改良后的砂砾土可以作为路基填料,减少了膨胀土路基改良的施工成本并就地取材减少施工成本,快速、高效、优质地完成了施工任务,取得了较好的经济和社会效益。
Expansive soil can＇ t be used as subgrade filling directly which must be through replacement or improved processing to increase the roadbed strength and enhance the water stability, in order to guarantee the stability and durability. Combined with the characteristics of expansive soil subgrade physical properties, and mixing the weak, medium expansive soil and other soil reasonably in the construction site to change its physical properties, the improved gravel soil can be used as roadbed filling which reduce the construction cost of expansive soil roadbed improvement and by using the local materials also can reduce the construction cost, and complete the construction task rapidly, efficiently, with high quality, achieve good economic and social benefits.
出处
《施工技术》
CAS
北大核心
2014年第5期97-99,共3页
Construction Technology
关键词
公路工程
路基
膨胀土路基
换填厚度
施工技术.
road construction
subgrade
expansive soil subgrade
replacement thickness
construction
