| 膨胀土路堤的化学改性试验研究 |
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| 引用本文： | 王艳萍,胡瑞林,李志清,李春成.膨胀土路堤的化学改性试验研究[J].工程地质学报(英文版),2008,16(1):124-129. |
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| 作者姓名： | 王艳萍 胡瑞林 李志清 李春成 |
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| 作者单位： | 1.中国科学院地质与地球物理研究所 北京 100029; |
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| 摘 要： | 膨胀土是一种具有特殊工程性质的土,它对土木工程有着巨大的影响和危害。本文针对公路膨胀土路堤填料改良提出的PAS化学改性剂包边处理新方法,对其改性原理及其特殊的施工工艺做了详细介绍,并通过多项试验研究了改良前后膨胀土胀缩性、强度特性等方面的变化。研究表明,PAS生态改性处理膨胀土是一种有效的方法,经处理后的膨胀土胀缩性显著降低,强度和水稳定性得到大幅提高。且PAS不会改变原土壤植被育培能力,改性边坡可以结合植物固坡的方法进行生态防护。PAS改性处理与远距离运土路基填料置换相比,具有很大经济优势,特别是在高塑性膨胀土大量分布的地区,PAS改性剂处理膨胀土路基具有很好的推广价值。
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| 关 键 词： | PAS 膨胀土 包边路堤 化学改性 |
| 文章编号： | 1004-9665/2008/16(01)-0124-06 |
| 收稿时间： | 2007-01-04 |
| 修稿时间： | 2007-03-06 |
FIELD EXPERIMENT ON CHEMICAL MODIFIED TREATMENT OF EXPANSIVE SOIL EMBANKMENT |
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| WANG Yanping,HU Ruilin,LI Zhiqing,LI Chuncheng.FIELD EXPERIMENT ON CHEMICAL MODIFIED TREATMENT OF EXPANSIVE SOIL EMBANKMENT[J].Journal of Engineering Geology,2008,16(1):124-129. |
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| Authors: | WANG Yanping HU Ruilin LI Zhiqing LI Chuncheng |
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| Institution: | 1.Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029;2.Institute of Chemistry, Chinese Academy of Sciences, Beijing 100084 |
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| Abstract: | Expansive soil is a kind of special soils and can do huge harm to engineering project.This paper proposes a PAS chemistry treatment to expansive soil embankment.The modified principle and special construction craft of this new method is presented.The results of experimental study show that the swelling characteristics and strength parameters of modified expansive soil are changed obviously.The results indicate that PAS chemical treatment is an effective method for expansive embankment.Through the PAS treatment,the swelling and shrinking deformation can be reduced remarkably.The strength and the water stability can also be significantly improved.On the other hand,the PAS does not change the cultivate capacity of the soil.Plant fixed slope method can be adopted as ecology protection for the treated embankment slope.Comparing with long-distance replacements,specially in the area massively distributed with high plastic expansive soils,the PAS treatment has a very greatly economical superiority to be used. |
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| Keywords: | PAS Expansive soil Embankment Chemical modified treatment Ecology |
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