| 用土水特征曲线分析膨胀土的改良效果 |
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| 引用本文： | 杨和平,林丽萍,肖杰,湛文涛.用土水特征曲线分析膨胀土的改良效果[J].公路交通科技,2011(10):1-6. |
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| 作者姓名： | 杨和平 林丽萍 肖杰 湛文涛 |
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| 作者单位： | 长沙理工大学特殊土工程研究所; |
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| 基金项目： | 国家自然科学基金项目(50978035); 交通运输部西部交通建设科技项目(200831800089) |
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| 摘 要： | 为建立非饱和土理论与工程问题的联系,探讨用土水特征曲线来评价膨胀土的改良效果.将石灰、粉煤灰2种改良剂(均用4种掺量)掺入百色膨胀土,开展自由膨胀率试验,同时按改进葡式击实法确定的各改良土最佳含水率制备试样,通过压力板仪完成脱湿土水特征曲线试验(吸力范围5～1 000 kPa),获得不同改良土的膨胀性及土水特征曲线线系...
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| 关 键 词： | 道路工程 非饱和土 土水特征曲线 膨胀土 化学改良 效果评价 |
Analysis on Improvement Effect of Expansive Soil by Soil-water Characteristic Curve |
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| YANG Heping,LIN Liping,XIAO Jie,ZHAN Wentao.Analysis on Improvement Effect of Expansive Soil by Soil-water Characteristic Curve[J].Journal of Highway and Transportation Research and Development,2011(10):1-6. |
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| Authors: | YANG Heping LIN Liping XIAO Jie ZHAN Wentao |
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| Institution: | YANG Heping,LIN Liping,XIAO Jie,ZHAN Wentao (Research Institute of Special Soil Engineering,Changsha University of Science and Technology,Changsha Hunan 410004,China) |
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| Abstract: | For establishing the relationship between the theory of unsaturated soil and engineering problem,the soil-water characteristic curve was used to discuss the improvement effect of expansive soil.Four contents of two improvers,i.e.,lime and fly-ash,were added into the Baise expansive soil respectively for free expansion ratio testing.Based on the optimum moisture contents determined by the modified Proctor compaction method,the testing specimens of each improved soil were made.Through dewetting soil-water cha... |
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| Keywords: | road engineering unsaturated soil soil-water characteristic curve expansive soil chemical improvement evaluation of effect |
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