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黄泛区粉性土路基基本特性与施工技术探讨

Keywords: 道路工程,路基工程特性,压实技术,粉性土,黄泛区

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Abstract:

通过黄泛区土的粒径分布与颗粒成熟度试验,分析该区粉性土难以压实及压实的路基具有冻敏性和强烈的毛细作用的原因。通过土的毛细上升试验,给出粉性土路基过湿状态的临界高度。进行粉性土与粘性土的击实、粉性土的动力响应与大量现场压实工艺组合试验,分析该成因粉性土的压实性状与压实机理,提出粉性土最适宜的碾压工艺参数与碾压工艺及压实控制指标。为粉土路基病害处治技术、路基设计关键指标的选用、路基施工工艺与质量控制指标的确定,提供理论与试验依据。

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