| 改良膨胀土的干湿循环特性试验研究 |
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| 引用本文： | 杨成斌,查甫生,崔可锐.改良膨胀土的干湿循环特性试验研究[J].工业建筑,2012,42(1):98-102,12. |
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| 作者姓名： | 杨成斌 查甫生 崔可锐 |
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| 作者单位： | 1. 合肥工业大学建筑设计研究院,合肥230009／合肥工业大学资源与环境工程学院,合肥230009
2. 合肥工业大学资源与环境工程学院,合肥,230009 |
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| 基金项目： | 国家自然科学基金项目，合肥工业大学科研发展基金资助项目，同济大学岩土及地下工程教育部重点实验室开放基金资助项目 |
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| 摘 要： | 干湿循环作用对改良膨胀土的工程性质存在重要的影响,而目前这方面的研究成果很少。以掺石灰和粉煤灰改良的典型合肥膨胀土为研究对象,通过系统的室内试验,研究在干湿循环作用下,改良膨胀土的膨胀性、界限含水量、颗粒分布以及无侧限抗压强度等方面的变化规律,深入探讨干湿循环作用对改良膨胀土工程性质的影响。结果表明,改良膨胀土的膨胀量、液限、塑性指数、黏粒含量随干湿循环次数的增加而增大,而塑限、粉粒含量以及无侧限抗压强度则随干湿循环次数的增加而减小。
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| 关 键 词： | 改良膨胀土 干湿循环 工程性质 无侧限抗压强度 |
EFFECT OF CYCLIC WETTING AND DRYING ON THE ENGINEERING PROPERTIES OF STABILIZED EXPANSIVE SOILS |
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| Yang Chenbin,Zha Fusheng,Cui Kerui.EFFECT OF CYCLIC WETTING AND DRYING ON THE ENGINEERING PROPERTIES OF STABILIZED EXPANSIVE SOILS[J].Industrial Construction,2012,42(1):98-102,12. |
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| Authors: | Yang Chenbin Zha Fusheng Cui Kerui |
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| Affiliation: | 1.Institute of Architectural Design,Hefei University of Technology,Hefei 230009,China; 2.School of Resources and Environment Engineering,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | This paper investigated the effect of cyclic wetting and drying on the engineering properties of lime or fly ash stabilized expansive soils.For this purpose,by means of a series of lab tests,it was evaluated the effect of cyclic wetting and drying on swell percent,Atterberg limits,grain size distribution,and unconfined compressive strength of stabilized expansive soils.Test results showed that the stabilized expansive soils experienced an increase in swelling percent,liquid limit,plasticity index,and clay fraction content upon cyclic wetting and drying,and a reduction in plastic limit,silt fraction content,and unconfined compressive strength upon cyclic wetting and drying. |
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| Keywords: | stabilized expansive soil cyclic wetting and drying engineering properties unconfined compressive strength |
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