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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 9    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 9, September 2011
Variability in the Geotechnical properties of some residual clay soils from southwestern Nigeria
Full Text(PDF, 3000)  PP.  
I. A. Oyediran and H. F. Durojaiye
Clay, Geotechnical properties, Insignificant difference, Investigated, Residual soil, Statistical analysis, Variability
Some residual clay soils from southwestern Nigeria have been investigated with a view to elucidating their geotechnical prop-erties and determine the possible variations in these properties in relation to the sampling distance.Eight bulk residual soil samples from two test pits separated 30m apart at intervals of 0.5m up to a depth of 2.0m were analyzed in the laboratory to determine specific gravity, grain size distribution, consistency limits, linear shrinkage, unconfined compressive strength and compaction characteristics. The data generated were subsequently subjected to statistical analysis. The investigations revealed that the soils are generally well graded, inorganic, with medium to high plasticity and hence compressibility and are of the same geologic origin. Statistical T-test showed no significant difference exists between the soils in terms of specific gravity, liquid limit, plastic limit, plasticity index, linear shrinkage, % clay size fraction, amount of fines, unconfined compressive strength and optimum moisture content. However the maximum dry density of the soils from both pits differed significantly. Although most of the parameters examined are not as varied and showed insignificant difference, the equations generated provide an option in the estimation of properties considering the close sampling distance.
[1] M.O. Adesunloye, “Investigating the problem soils of Nigeria,” Proc. 9th regional conf. on soil mech. Eng. for Africa, Vol.1, A.A. Balkema/ Rotterdam/Boston. pp 103-112, 1987.

[2] G.O. Adeyemi, A.A. Ojo, and M.O. Omidiran, “Relationship between some index properties and crushing strengths of three southwestern Nigerian lateritic clay deposits,” Nig. J. Tech. Res. (1990) 2, 33-38, 1990.

[3] J.O. Akinmusuru, and J.O. Adebayo, “Fiber reinforced earth block,” Proceedings of the American Society of Civil Engineers, Vol. 107 No. CO3 pp. 487- 496, 1981.

[4] D.R. Brunner, and D.J. Keller, “Sanitary landfill design and operation.” U. S. Environmental Protection Agency, 59 p, 1972.

[5] BS1377, “Methods of tests for soils for civil engineering purposes,” British standard Institution, London. 2, Park Street London WI A2 BS, 1975.

[6] A. Chakchouk, B. Samet, and T. Mnif, “Study on the potential use of Tunisian clays as pozzolanic material,” Journal of Applied Clay Science. Vol. 33, 2:79- 88, 2006.

[7] D.E. Daniel, and Y.K. Wu, “Compacted clay liners and covers for arid sites,” Journal of Geotechnical Engineering ASCE Vol. 119, No. 2, pp 223–237, 1993.

[8] G. Dazhao, “Reliability analysis and span of the indexes of the mechanical properties of foundation soil,” J. Tongji Univ. 25(4):59-67, 1985.

[9] G. Dazhao, “Statistical method of shear strength indexes,” J. Geotech Investig Surv 4:1-5, 1986.

[10] A.A. Elueze, “Compositional appraisal and petrotectonic significance of the Imelu banded ferruginous rock in the Ilesha schist belt, south western, Nigeria,” Journal Min. Geology 36.1: 9 – 18, 2000.

[11] Federal Ministry of Works and Housing Nigeria, “Specifications for roads and bridges,”26p, 1974.

[12] Geological Survey of Nigeria, “Geological map of Nigeria,” Published by the Federal Ministry of Solid Minerals Development, 2004.

[13] M.D. Gidigasu, Laterite soil Engineering. Elsevier, Amsterdam 554p, 1976.

[14] International institute of Tropical Agriculture (IITA). Annual summary of weather data for IITA central station Ibadan, Nigeria, pp. 2-7, 2007.

[15] I. Jefferson, and C.D.F. Rogers, “Liquid limit and the temperature sensitivity of clays,” Eng. Geol., 49: 95-109, 1998.

[16] M.H. Kabir, and M.R. Taha, “Assessment of Physical Properties of a Granite Residual Soil as an Isolation Barrier,” Electronics Journal of Geotechnical Engineering Vol. 92c, 13p, 2004.

[17] P.W. Lee, Ceramics. Reinhold Publishing Corporation, New York; Chapman and Hall Ltd. London. 93p, 1961.

[18] A.O. Madedor, “Pavement design guidelines and practices for different geological areas in Nigeria,” In Ola, S.A (ed). “Tropical soils of Nigeria. In Engineering practice,” A.A Balkema Publishers), Rotterdam, 291-297, 1983.

[19] R. Maignien, “Review of Research on Laterites,” UNESCO, Natural Resources Res.4, 148p, 1966.

[20] J.S. Ojo, and G.O. Adeyemi, “Opportunities for ventures in construction materials,” In. Prospects for investment in mineral resources of southwestern Nigeria A.A. Elueze (ed.), pp. 47-54, 2003.

[21] S.A. Ola, “Geotechnical properties of an Attapulgite clay shale in Northwestern Nigeria,” Engineering Geology Amsterdam. 19: 1-13, 1982.

[22] J. Que, Q. Wang, J. Chen, B. Shi, and Q. Meng, “Geotechnical properties of the soft soil in Guangzhou college city,” Bull. Eng. Geol. Environ. 67: 479-483, 2008.

[23] M.A. Rahaman, “Recent advances in the study of the Basement Complex of Nigeria,” In: Precambrian Geology of Nigeria. Geological Survey of Nigeria, Kaduna South. pp.11 – 43, 1988.

[24] T.N. Ramamurthy, and T.G. Sitharam, Geotechnical Engineering. S. Chand, New Delhi. 289p, 2005.

[25] W.H. Tang, “Principles of probabilistic characterization of soil properties,” In: Bowles D.S. Ko H.Y (eds) Probabilistic characterization of soil properties: bridge between theory and practice. ASCE, pp 74-89, 1984.

[26] P. Walsh, and P. O’ Leary, “Evaluating a potential sanitary landfill site,” Retrieved April 27 2005, from http://bvsde.per.paho.org/ 10p, 2002.

[27] T.H. Wu, and A. El-Jandali, “Use of time series in geotechnical data analysis,” Geotech. Test Journal GTJODJ 8(4):151-158, 1985.

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