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在公路工程建设中,常常会遇到膨胀土的地段,而膨胀土具有明显的膨胀和收缩的特性,对工程的施工质量带来很大的影响,为了确保膨胀土地段的工程质量,对膨胀土的成因、成分、结构特征、膨胀和收缩特性进行分析,得出了膨胀土对路基质量影响的主要原因。提出在公路工程路堤中采用填筑好土封闭路堤表面,对路堑则将路槽下的膨胀土挖除后用好土更换等措施,以便对膨胀土路基进行质量的控制。
In the highway construction, often encounter the expansive soil lots, and expansive soil has obvious expansion and contraction characteristics, the construction quality of the project has a great impact, in order to ensure the quality of the expansive soil section, the expansion The causes, compositions, structural features, swelling and shrinkage characteristics of soils are analyzed, and the main causes of the influence of expansive soils on the quality of roadbed are obtained. Proposed in the highway embankment used to fill the soil closed embankment surface, the road is cut trench will be swept under the expansive soil with good soil replacement measures to control the quality of the expansive soil embankment.