Geotechnical Properties of Lateritic Soils Derived from Various Geologic Formations in Ohafia Area, Southeastern Nigeria
Abstract
Some lateritic soils collected and used for road construction in Ohafia Area, Southeastern Nigeria are not suitable. The purpose of this paper was to evaluate the quality of lateritic soils derived from various geologic formations in Ohafia, Area, as road construction materials using their geotechnical properties (Atterberg limits, grain-size distribution and CBR). Eight representative samples derived from various geologic formations in the study area (including 2 from Mamu Formation (Asaga and Akanu); 3 from Nsukka Formation (Ebem, Ozu Abam and Ndi Uduma); 1 from Nkporo Formations (Ndiorioko); 1 from Ajali Formations (Ndi Uduma Ukwu); and 1 from Imo Shale (Amagbu), was used in the study. Results of the laboratory tests indicate that the liquid limits range from 26.0 to 33.0%, while the plasticity indices range from 2.8 to 10.0%. The % fines range from 18.6 to 64.9%. The CBR (Soaked) range from 17.0 to 39.0%, while CBR (unsoaked) range from 35 to 79%. On the basis of Federal Ministry of Works Specifications for highway pavement materials, only soils derived Ajali Formations, Nsukka Formation and Nkporo Formation are fairly suitable materials. They satisfy the specification in all areas LL<36%, P1 < 12% and % fines < 30%), though they have low CBR values (soaked and unsoaked). Soils derived from Mamu Formations and Imo Shale are not good because of their particularly very high % fines. Treatment of any of or all the soils with either cement or lime will improve the poor quality aspect (low CBR and high % fines) and hence make the soils suitable to be used as road construction materials.
Keywords
Lateritic soils
Grain-size
CBR
Atterberg limits
Ohafia Area
References
Adeoye, G.O; Ogunsanwo, O and Ige, O.O. (2013) Geotechnical Evaluation of some soils from part of southwester Nigeria Usable as Liners in Waste Disposal Landfills. Journal of Civil and Environment Science. 3(7), 107-114. Adeoye, G.O; Ogunsanwo, O and Ige, O.O. (2013) Geotechnical Evaluation of some soils from part of southwester Nigeria Usable as Liners in Waste Disposal Landfills. Journal of Civil and Environment Science. 3(7), 107-114. Adeoye, G.O; Ogunsanwo, O and Ige, O.O. (2013) Geotechnical Evaluation of some soils from part of southwester Nigeria Usable as Liners in Waste Disposal Landfills. Journal of Civil and Environment Science. 3(7), 107-114. A. O. 1998: Geology, Geochemistry and Origin of the Banded and Granite Gneisses in the Basement Complex of the Ilesha Area, Southwestern Nigeria. Journal of Earth Sciences. 26 (4): 633-641. Aginam CH, Chidolue CA, Nwakaire C. (2014) Geotechnical Properties of Lateritic Soils From Northern Zone of Anambra State, Nigeria, Int J of Eng Research & Dev. Vol , Issue 12 (2014), pp.23-29 Aginam CH, Chidolue CA, Nwakaire C. (2014) Geotechnical Properties of Lateritic Soils From Northern Zone of Anambra State, Nigeria, Int J of Eng Research & Dev. Vol , Issue 12 (2014), pp.23-29 Alayaki F. M., Water Absorption Properties of Laterite Soil in Road Pavement: A Case Study Ife-Ilesha Highway, South Western Nigeria. Amadi A. (2010). Evaluation of Changes in Index Properties of Lateritic Soil Stabilized with Fly Ash. Leonardo Electronic Journal of Practices and Technologies, Issue 17, pp. 69-78. Amadi A. (2010). Evaluation of Changes in Index Properties of Lateritic Soil Stabilized with Fly Ash. Leonardo Electronic Journal of Practices and Technologies, Issue 17, pp. 69-78. ASTM, 1996, „Special procedure for testing soil and rock for engineering purpose?. ASTM International, Washington DC, USA British Standards Institution 1990: British Standard Methods of test for Soils for Civil Engineering Purposes: BS 1377. British Standards Institution, London. British Standards Institution 1990: British Standard Methods of test for Soils for Civil Engineering Purposes: BS 1377. British Standards Institution, London. Daramola SO, Malomo S, Asiwaju-Bello YA (2015) Engineering geology of failed sections of Isua– Idoani road Southwestern Nigeria. J Enviro Ear Sci 5(19):38–45 Day, R. W. (2000). Geotechnical Engineer’s Portable Handbook. New York: McGraw-Hill. Ehujuo, N.N., Okeke, O.C. and Akaolisa, C.C.Z (2017)., Geotechnical Properties of latetritic soils derived from various Geologic Formations in Okigwe Area, Southeastern Nigeria. FUTO Journal Series, 3(2), 178-189. Eldosouky, M.A., Ekwok, E.S, Akpan, E.A., Ogiji-Idaga, M.A. Pham, T.L. Abdelrahman, K., Gomez – Ortiz, D. and Alarifi, S.S. (2022) Deliniation of the structural liniaments of Southeast Nigeria, using high resolution aeromagnetic data. Open Geosciences, 14, 331- Elueze, A. A. 1982: Mineralogy and Chemical Nature of Meta-ultramafite in Nigeria schist Belts. Nigerian Journal of Mining and Geology, Vol. 19. pp. 21-29. Federal Ministry of Works and Housing 1997: General Specification- Roads and Bridges. Vol. 2,280 pp. Federal Ministry of Works and Housing, 1997. Nigerian General Specification for Roads and Bridges (Revised Edition), 137-275. Fookes G. (1997).Tropical Residual Soils: A Geology Society Engineering Group Working Party Revised Report. Geology Society: Tulsa, OK. Garber JN, Hoel LA (1999) Traffic and highway engineering. Brooks/Cole publishing Garg, S. K. (2009). Soil Mechanics and Foundation. Engineering (7th ed., pp. 673–683). New Delhi: Khana publishers. Genik, G.J., 1993. Petroleum Geology of Cretaceous–Tertiary Basins in Niger, Chad and Central African Republic. AAPG Bull., 77: 1405-1434. Gidigasu M.D. (1976). Laterite Soil Engineering: Pedogenesis and Engineering Principle. Development in Geotechnical Engineering. 9:554p. Gidigasu MD (1973) Review of identification of problem laterite soils in highway engineering. Transport Res Board 497:96–11 Gidigasu MD (1976) Geotechnical evaluation of residual gravels in pavement construction. Eng Geo 15:173–794 Gidigasu, M. D. (1983). Development of acceptance specifications for tropical gravel paving materials. Eng Geo, 19, 213–240. Gidigasu, M. D. 1971: The Importance of Soil Genesis in the Engineering Classification of Ghana Soils. Eng. Geol. 5: pp. 117-161. Gillot J.E. (1969). Clay in Engineering Geology. Elsevier Publishing: Amsterdam, the Netherlands. Ige O.Omoniyi, Ogunsanwo. O; Aweda K. A; Geotechnical and Mineralogical Evaluation of Some Lateritic Soils from Southwestern Nigeria; vol 19(2014). Ige, O. A., Durotoye, B., & Oluyemi, A. E. (2005). Mineralogy and geochemistry of lateritic weathering profile on ultramafic rock bodies around Mokuro, Ile-Ife area, Southwestern Nigeria. Journal of Mining and Geololgy, 41(1), 11-18. Ige, O.O., and Ogunsanwo, O.O. (2009). Assessment of Granite-derived residual soil as mineral seal in sanitary landfills. Researcher, 1 (6), p 84-90. Ighodalo CA (2009) Transport Infrastructure and Economic Growth in Nigeria. Revised Paper Submitted for Presentation at the First International Conference on Transport Infrastructure (ICTI 2008), Beijing, China. April 24-26, 2008. Jegede G (1997) Highway pavement failure induced by soil properties along the F209 highway at Omuoke, southwestern Nigeria. Nig J Sci. Jegede G (1998) Effects of some engineering and geological factors on highway failures in parts of Southwestern Nigeria. Unpublished Ph.D. thesis. Federal University of Technology, Akure, p 251 Jegede OG (2004) Highway pavement failure induced by poor geotechnical properties at a section along the F209 Okitipupa-Igbokoda highway, Southwest Nigeria. Ife J Sci 6(1):41–44 Jegede OG, Olaleye BM (2013) Evaluation of engineering geologic and geotechnical properties of subgrade soils along re-alligned Igbara-Ikogosi Highway, South-west Nigeria. Inter J Eng &Sci 2(5):18–21. Kabir, M. H., & Taha, M. R. (2004). Assessment of physical properties of a granite residual soil as an isolation barrier. Electron J Geotech Eng, 92, 13. Kogbe, C. A. 1985. Paleogeographic history of Nigeria from Albiam time. In Geology of Nigeria (ed C.A Kogbe), P. 237. Lagos (Nigeria): Elizabethan Pub. Co. Madedor, A. C. 1983: Pavement Design Guidelines and Practice for Different Geological Areas in Nigeria. In: Ola, S. A. (ed) Tropical Soils of Nigeria in Engineering Practices. AA Balkema, Rotterdam, pp. 291 – 297. McCarthy, D. F. 2007: Essential of Soil Mechanics and Foundations. Basic Geotechnics. Pearson Prentice Hall. New Jersey. Meshida, E. A. 1986: Some Geotechnical Properties of Residual Mica Schist Derived Subgrade and Fill Materials in the Ilesha Area, Nigeria. Bull. I.A.E.G. 33. Meshida, E. A. 1987: Genetic Influence on the Compaction and CBR Characteristics of Three Lateritic Soils in Ile-Ife Area, S.W. Nigeria. 9th Reg. Conf. For Afr. On Soil Mech. And Found. Eng. Lagos, pp.461-465. Meshida, E. A. 2006: Highway failure over Talc- Tremolite- Schist Terrain: a case study of the Ife-Osu-Ilesha Highway, Southwestern Nigeria. Bulletin of Engineering Mitchell J.K 1993, Fundamental Soil Behavior, Wiley, New York. Mode, A.W. (2004). Shallow marine transgressive sedimentation in the Nsukka Formation, Southeastern Anambra Basin, Nigeria. NAPE Bull., 17(1), 28-paleogeography of West Africa. J. Geol., 8, 311-322 Mode, A.W. (2024). Shallow marine transgressive sedimentation in the Nsukka Formation Southeastern Anambra Basin, Nigeria. NAPE Bull., 17(1), 28-41. Murat, R.C., 1972. Stratigraphy and Paleogeography of the Cretaceous and Lower Tertiary in Southern Nigeria. In Dessauvagie, T.T.J., and white man, A.J. (Eds), Afr
