Influence of testing on permeability of compacted fine soils

IF 0.3 Q4 ENGINEERING, GEOLOGICAL Geotechnical Engineering Pub Date : 2015-10-01 DOI:10.1680/JGEEN.14.00147
S. Vinayagamoorthy, C. Anderson, B. Solan, B. Rankin, P. Mackinnon
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引用次数: 8

Abstract

The British standard constant-head triaxial test for measuring the permeability of fine-grained soils takes a relatively long time. A quicker test could provide savings to the construction industry, particularly for checking the quality of landfill clay liners. An accelerated permeability test has been developed, but the method often underestimates the permeability values compared owing to structural changes in the soil sample. This paper reports on an investigation into the accelerated test to discover if the changes can be limited by using a revised procedure. The accelerated test is assessed and compared with the standard test and a ramp-accelerated permeability test. Four different fine-grained materials are compacted at various water contents to produced analogous samples for testing using the three different methods. Fabric analysis is carried out on specimens derived from post-test samples using mercury intrusion porosimetry and scanning electron microscopy to assess the effects of testing on soil ...
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试验对压实细土渗透性的影响
测量细粒土渗透性的英国标准等头三轴试验耗时较长。一个更快的测试可以为建筑行业节省成本,特别是在检查垃圾填埋场粘土衬垫的质量方面。加速渗透试验已被开发出来,但由于土样结构的变化,这种方法往往低估了所比较的渗透值。本文报告了一项对加速试验的调查,以发现是否可以通过使用修订后的程序来限制这些变化。对加速试验进行了评价,并与标准试验和斜坡加速渗透试验进行了比较。四种不同的细颗粒材料在不同的含水量压实,以产生类似的样品,用于测试使用三种不同的方法。利用压汞孔隙度法和扫描电镜对测试后样品进行织物分析,以评估测试对土壤的影响。
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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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