| 石灰改良膨胀土抗剪强度参数试验研究 |
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| 引用本文： | 边加敏,蒋玲,王保田.石灰改良膨胀土抗剪强度参数试验研究[J].长江科学院院报,2012,29(12):62-67. |
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| 作者姓名： | 边加敏 蒋玲 王保田 |
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| 作者单位： | 1.南京交通职业技术学院 a.路桥工程系； b.江苏省道路交通节能减排技术研发中心, 南京 211188;2.河海大学 岩土力学与堤坝工程教育部重点实验室, 南京 210098 |
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| 基金项目： | 国家自然科学基金重点项目，教育部博士点基金，江苏省道路交通节能减排研发中心，南京交通职业技术学院科研项目 |
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| 摘 要： | 对石灰改良膨胀土强度形成机理进行了分析，研究了养护时间、初始含水率、掺灰率对石灰改良膨胀土的凝聚力及内摩擦角的影响，提出综合考虑含水率与掺灰率的凝聚力计算式，通过研究认为养护时间对凝聚力和内摩擦角的影响0~7 d比7~28 d 大，但对内摩擦角的影响比凝聚力小，这些结论的得出对进一步研究石灰改良膨胀土的抗剪强度具有一定的参考意义。
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| 关 键 词： | 膨胀土 石灰改良土 抗剪强度 养护时间 |
| 收稿时间： | 2011-10-20 |
Shear Strength Parameters of Lime-Treated Expansive Soils |
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| BIAN Jia-min
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JIANG Ling
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WANG Bao-tian.Shear Strength Parameters of Lime-Treated Expansive Soils[J].Journal of Yangtze River Scientific Research Institute,2012,29(12):62-67. |
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| Authors: | BIAN Jia-min JIANG Ling WANG Bao-tian |
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| Affiliation: | 1.Department of Road and Bridge Engineering, Nanjing Communications Institute of Technology, Nanjing 211188, China; 2.Jiangsu Research Center for Traffic Energy Saving and Emission Reduction, Nanjing Communications Institute of Technology, Nanjing 211188, China; 3.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | The strength formation mechanism of lime-treated expansive soil is analyzed, and then the effects of curing time, initial moisture content, lime rate on the cohesion and the internal friction angle of the treated expansive soil are investigated. The cohesion calculation formula in consideration of water content and lime rate is proposed. It is believed that the influence of curing time of 0-7 days on the cohesion and internal friction angle is larger than that of 7-28 days, and the curing time has less influence on internal friction angle than on cohesion. These conclusions can be referential for researches on the shear strength of lime-treated expansive soil. |
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| Keywords: | expansive soil lime treated soil shear strength curing time |
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