Effect of Anisotropy on Compression, Strength and Permeability Properties of Clayey Soil

Anisotropy on compression, strength and permeability of a clayey soil selected from Mosul city was studied in this paper. Laboratory standard tests were conducted on sets of duplicate disturbed and undisturbed specimens prepared in the vertical, 45º inclined and horizontal directions from block samp...

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Main Authors: Suhail I. Khyatt, Mohammed N. Al-Zaidy
Format: Article
Language:English
Published: Tikrit University 2013-12-01
Series:Tikrit Journal of Engineering Sciences
Subjects:
Online Access:https://tj-es.com/ojs/index.php/tjes/article/view/377
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author Suhail I. Khyatt
Mohammed N. Al-Zaidy
author_facet Suhail I. Khyatt
Mohammed N. Al-Zaidy
author_sort Suhail I. Khyatt
collection DOAJ
description Anisotropy on compression, strength and permeability of a clayey soil selected from Mosul city was studied in this paper. Laboratory standard tests were conducted on sets of duplicate disturbed and undisturbed specimens prepared in the vertical, 45º inclined and horizontal directions from block samples retrieved from the site. The one dimensional consolidation of the clayey soil was shown to be cross-anisotropic for the vertical and horizontal directions, the 45º inclined showed an intermediate results. Drainage occurred more rapidly in the horizontal direction comparing with 45º inclined and vertical directions, with horizontal to vertical permeability ratio (rkh) not less than (2.0) for disturbed and undisturbed specimens from both consolidation and permeability tests. Compression at higher effective stresses caused significant reductions in the coefficient of consolidation (cv) and permeability (k) although the rk values remained independent of the stress level. Furthermore the clayey soil specimens were noticeably anicotropic in strength, where the relationship between stresses and strains for vertical, 45º inclined and horizontal directions exhibited consistently dissimilar peak values as well as deformations at various strain levels.
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spelling doaj.art-80865b482b0946f9ac27c53d98b93cb22023-07-12T12:54:25ZengTikrit UniversityTikrit Journal of Engineering Sciences1813-162X2312-75892013-12-0121310.25130/tjes.21.3.08Effect of Anisotropy on Compression, Strength and Permeability Properties of Clayey SoilSuhail I. Khyatt0Mohammed N. Al-Zaidy1Civil Eng. Dept., University of Mosul, IraqCivil Eng. Dept., University of Mosul, IraqAnisotropy on compression, strength and permeability of a clayey soil selected from Mosul city was studied in this paper. Laboratory standard tests were conducted on sets of duplicate disturbed and undisturbed specimens prepared in the vertical, 45º inclined and horizontal directions from block samples retrieved from the site. The one dimensional consolidation of the clayey soil was shown to be cross-anisotropic for the vertical and horizontal directions, the 45º inclined showed an intermediate results. Drainage occurred more rapidly in the horizontal direction comparing with 45º inclined and vertical directions, with horizontal to vertical permeability ratio (rkh) not less than (2.0) for disturbed and undisturbed specimens from both consolidation and permeability tests. Compression at higher effective stresses caused significant reductions in the coefficient of consolidation (cv) and permeability (k) although the rk values remained independent of the stress level. Furthermore the clayey soil specimens were noticeably anicotropic in strength, where the relationship between stresses and strains for vertical, 45º inclined and horizontal directions exhibited consistently dissimilar peak values as well as deformations at various strain levels. https://tj-es.com/ojs/index.php/tjes/article/view/377AnisotropyDirectional VariationOedometer TestOne-Dimensional ConsolidationPermeabilityStrength Test
spellingShingle Suhail I. Khyatt
Mohammed N. Al-Zaidy
Effect of Anisotropy on Compression, Strength and Permeability Properties of Clayey Soil
Tikrit Journal of Engineering Sciences
Anisotropy
Directional Variation
Oedometer Test
One-Dimensional Consolidation
Permeability
Strength Test
title Effect of Anisotropy on Compression, Strength and Permeability Properties of Clayey Soil
title_full Effect of Anisotropy on Compression, Strength and Permeability Properties of Clayey Soil
title_fullStr Effect of Anisotropy on Compression, Strength and Permeability Properties of Clayey Soil
title_full_unstemmed Effect of Anisotropy on Compression, Strength and Permeability Properties of Clayey Soil
title_short Effect of Anisotropy on Compression, Strength and Permeability Properties of Clayey Soil
title_sort effect of anisotropy on compression strength and permeability properties of clayey soil
topic Anisotropy
Directional Variation
Oedometer Test
One-Dimensional Consolidation
Permeability
Strength Test
url https://tj-es.com/ojs/index.php/tjes/article/view/377
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