膨胀土的石灰浆稳定

IF 0.3 Q4 ENGINEERING, GEOLOGICAL Geotechnical Engineering Pub Date : 2003-07-01 DOI:10.1680/GENG.2003.156.3.139
Sudhakar M. Rao, T. Thyagaraj
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引用次数: 35

摘要

石灰浆和石灰桩技术是膨胀土堆积物原位稳定的可行选择。本文报道了通过人工干燥膨胀土试样对石灰浆渗透膨胀土进行原位化学稳定的实验室研究结果。在室内对膨胀土进行干燥处理,使其在压实后产生收缩裂缝。收缩裂缝极大地促进了石灰浆在膨胀土体中的运移。通过在两个径向距离上比较石灰浆处理后的土与天然土的理化性质和工程性质,研究石灰浆对干燥膨胀土的化学稳定效果。试验结果表明,石灰浆在干燥土中的迁移促进了土体中强烈的石灰改性和火山灰反应。强烈的土-石灰反应使土壤的塑性减小,膨胀幅度减小,且土-石灰反应使土体的塑性减小。
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Lime slurry stabilisation of an expansive soil
Lime slurry and lime pile techniques are viable choices for in-situ stabilisation of expansive soil deposits. This paper reports the results of a laboratory study on in-situ chemical stabilisation of an expansive soil that permeated lime slurry through an artificially desiccated expansive soil specimen. The soil was desiccated in the laboratory to induce shrinkage cracks in the compacted expansive soil. The shrinkage cracks greatly assisted migration of lime slurry in the expansive soil mass. The efficiency of lime slurry in chemically stabilising the desiccated expansive soil was investigated by comparing the physico-chemical properties and engineering properties of the treated soil with those of the natural soil specimen at two radial distances. Experimental results indicated that migration of lime slurry through the desiccated soil promoted strong lime modification and pozzolanic reactions in the soil mass. The strong soil–lime reactions rendered the soil less plastic, reduced the swell magnitude, and ...
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来源期刊
Geotechnical Engineering
Geotechnical Engineering ENGINEERING, GEOLOGICAL-
CiteScore
0.50
自引率
0.00%
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0
期刊介绍: The objectives of the Association shall be the promotion of co-operation among geotechnical societies in SE Asia; and the assistance to member societies who have limited number of members. Now there is only one combined web titled: AGSSEA-SEAGS. SEAGS & AGSSEA encourage the submission of scholarly and practice-oriented articles to its journal. The journal is published quarterly. Both sponsors of the journal, the Southeast Asian Geotechnical Society and the Association of Geotechnical Societies in Southeast Asia, promote the ideals and goals of the International Society of Soil Mechanics and Geotechhnical Engineering in fostering communications, developing insights and enabling the advancement of the geotechnical engineering discipline.
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