| 干湿循环作用下石灰处治土强度特性试验研究 |
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| 引用本文： | 张大琦. 干湿循环作用下石灰处治土强度特性试验研究[J]. 上海交通大学学报, 2011, 0(Z1) |
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| 作者姓名： | 张大琦 |
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| 作者单位： | 江苏省交通科学研究院有限公司; |
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| 摘 要： | 以广西膨胀土为研究对象,通过一系列室内试验获得了石灰处治膨胀土的胀缩性指标(最大干密度、最优含水量、自由膨胀率和黏粒含量)随掺灰比和龄期的变化规律.针对石灰处治膨胀土在特定恒温恒湿条件下进行了标准吸湿含水率试验,以探讨标准吸湿含水率检验膨胀土处治效果的适用性.考虑干湿循环效应及反复交通荷载的共同作用,分别开展了不同干湿循环次数后的处治土静、动三轴试验,研究了处治膨胀土静、动力学强度指标随干湿循环次数的变化规律,并对处治膨胀土在干湿循环作用下的破坏特征进行了分析.
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| 关 键 词： | 处治膨胀土 干湿循环 标准吸湿含水率 动三轴试验 |
Experimental Study of Strength Characteristics of Lime Stabilized Soil in Drying and Wetting Cycles |
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| ZHANG Da-qi. Experimental Study of Strength Characteristics of Lime Stabilized Soil in Drying and Wetting Cycles[J]. Journal of Shanghai Jiaotong University, 2011, 0(Z1) |
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| Authors: | ZHANG Da-qi |
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| Affiliation: | ZHANG Da-qi(Jiangsu Transportation Research Institute Co.,Ltd.,Nanjing 211112,China) |
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| Abstract: | The expansive soil in Guangxi Province was studied,and the influence rules of lime proportion and age on the swell-shrink properties(maximum dry density,optimum moisture content,free swelling rate,clay content) of stabilized expansive soil were derived according to laboratory tests.For the first time,standard moisture absorption water content test was conducted in a particular constant temperature and humidity condition for lime treat expansive soil,and the applicability of expansive soil treatment effect w... |
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| Keywords: | lime stabilized expansive soil drying and wetting cycles standard moisture absorption water content dynamic triaxial tests |
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