| 石灰土冻胀特性试验研究 |
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| 引用本文： | 张立新,王家澄. 石灰土冻胀特性试验研究[J]. 岩土工程学报, 2002, 24(3): 336-339 |
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| 作者姓名： | 张立新 王家澄 |
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| 作者单位： | 北京师范大学遥感与GIS研究中心资源与环境科学系；中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室 北京100875；中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室；甘肃兰州730000； |
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| 基金项目： | 冻土工程国家重点实验室基金和博士后基金资助 |
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| 摘 要： | 为考察石灰土在冻结状态下的物理力学性质 ,对不同石灰含量的石灰土的冻胀特性进行了试验研究。试验结果表明 ,石灰土的孔隙度和导水系数随着石灰含量的增加不断减小 ,而黏聚力则不断增加。在这种情况下 ,石灰土的冻胀率随着石灰含量的增加呈现显著减小的趋势。综合其它有关因素 ,从防止冻胀的角度来看 ,石灰含量的最优值约为 12 %～ 15 %左右
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| 关 键 词： | 冻胀 石灰土 冻结过程 |
| 文章编号： | 1000-4548(2002)03-0336-04 |
| 修稿时间： | 2001-09-24 |
Experimental study on frost heaving behaviors of lime soil |
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| ZHANG Lixin,WANG Jiacheng. Experimental study on frost heaving behaviors of lime soil[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(3): 336-339 |
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| Authors: | ZHANG Lixin WANG Jiacheng |
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| Affiliation: | 1.Research Center for Remote Sensing and GIS Department of Geography Beijing Normal University Beijing 100875 China 2.State Key Laboratory of Frozen Soil Engineering Cold and Arid Regions Environmental and |
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| Abstract: | This paper is concerned with the physico mechanical properties of lime soil during freezing process.By experiment the frost heaving behaviors of lime soil with different lime content are studied.The test results show that the porosity and hydraulic conductivity of lime soil decrease and the cohesion strength increases with increasing of lime content.Thus,the amount of frost heaving of lime soil is much smaller than that of pure soil.The optimum lime content is about 12%-15%.It is concluded that mixing of lime with soil has noticeable influence on the freezing behaviors of soil and causes a restraint on the frost heaving. |
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| Keywords: | frost heaving lime soil freezing process |
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