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

محتوى المقالة الرئيسي

Suhail I. Khyatt
Mohammed N. Al-Zaidy

الملخص

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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المراجع

Gao Z. , Zhao J. , Yao Y., "A generalized

anisotropic failure criterion for geomaterials",

International Journal of Solids and Structures

Vol 47,P.P. 3166–3185, 2010.

Nishimura S., "Laboratory Study On

Anisotropy Of Natural London Clay"

,M.Sc.Thesis, Department Of Civil And

Environmental Engineering , Imperial

College London, 2005.

O'kelly, B.C., "Compression and

Consolidation Anisotropy of Some Soft

Soils", Geotechnical and Geological

Engineering, Vol. 24, P.P. 1715-1728,

Cortellazzo, G., and Simonini, P.,

"Permeability evaluation and its

implications for consolidation analysis of an

Italian soft clay deposit", Canadian

Geotechnical Journal, Vol. 38, pp.1166–

, 2003.

ASTM Standard Annual Book of

American society for Testing and

Material, 2003.

Vanapalli, S.K., Fredlund, D.G., and

Pufahl, D.E., "Saturated-Unsaturated

Shear Strength and Hydraulic

Conductivity Behavior of a Compacted

Glacial Till". 50th Canadian

Geotechnical Conference, Ottawa,

October 20-22, pp. 625-632, 1997. DOI: https://doi.org/10.1023/A:1005362123443

Islam, M.S. & Hoque E., "Directional

Dependency of Strength in Compacted

Dhaka Clay", Journal of Civil

Engineering, The Institute of

Engineering, Bangladesh Vol. CE 31,

No. 1, P.P. 25-35, 2003. DOI: https://doi.org/10.1023/A:1022406602311

Boynton S.S., Daniel D.E., "Hydraulic

Conductivity Tests on Compacted Clay",

Journal of Geotechnical Engineering,

ASCE, Vol.111, No.4, P.P.465-478,

Das, B.M., " Advanced Soil Mechanics",

Taylor & Francis e-Library, 3rd ed., UK,

Lambe, T.W. and Whitman, R.V., "Soil

Mechanics", John Wiley and Sons,

Singapore, 1979.

Burland JB "On the compressibility and

shear strength of natural clays". 30th

Rankine Lecture.

Geotechnique;Vol.40,No.3,P.P. 29–78,

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