Earth, Energy & Environment
Received: 01 Jun 2018 , Published: 03 June 2018
Views: 73 , Download: 37
|1||Agbo, C.C. and Uzoegbu, M.U.|
A geotechnical evaluation of some soils in Choba, Port Harcourt, South-South, Nigeria has been carried out. This was done to determine the suitability of the soils for use as subgrade/filling, sub-base and base course materials for road construction. The samples were collected from ten different areas, at surface and sub-surface levels. The areas are along Rumuokoro – Choba within the East – West Road. The soil samples were subjected to laboratory investigations in conformity with the American Association of State Highway and Transportation (AASHTO) specifications. Results of the geotechnical tests indicate that the proportion passing the AASHTO sieve N0. 10 - 60 range from Cc: 1.59% to D60: 0.450% whereas plasticity index ranges from 4.4.0 to 26.1 respectively. The compaction test result revealed an optimum Moisture Content (O.M.C) value of 18.70% and a maximum Dry Density (M.D.D) value is 1983kg/m3. The plastic limit values ranges from 25.8% to 65.0%. Soils at Choba and its environs are thus considered suitable for use as sub-grade/filling materials, while the soil at some sites are unsuitable for use as subgrade/filling and sub-base material. This is probably why the road at these areas failed after construction.
Akaegbobi IM, Schmitt M (1998). Organic facies, hydrocarbon source potential and the reconstruction of depositional paleoenvironment of Campano- Maastrichtian Nkporo shale in the Cretaceous Anambra Basin, Nigeria NAPE Bull., 13(1), 1-19.
Akpokodje E.G 1979. The importance of Engineering Geological mapping in the development of Niger Delta Basin. Bull Int. Assoc. Eng. Geol. 19 p. 101- 108.
Akpokodje E.G 2001. Introduction to Engineering Geology. Paragraphics, Port
Harcourt, pp. 142-143
America Society for Testing and Materials 1975. Special procedures for Testing soils and Rocks for Engineering Purposes. Technical Publication, No. 479, 5th.
Avbobbo AA, Ogbe FG (1978). Tertiary lithostratigraphy of Niger Delta American Association Petroleum Geology Bulletin, v. 62, 295- 306.
Bustin RM (1988). Sedimentology and characteristics of dispersed organic matter in Tertiary Niger Delta: origin of source rocks in a deltaic environment: American Association of Petroleum Geologists Bulletin, v. 72, p. 277-298.
Doust H, Omatsola E (1990). Niger Delta, in , Edwards, J. D., and Santogrossi, P.A., eds., Divergent/passive Margin Basins, AAPG Memoir 48: Tulsa, American Association of Petroleum Geologists, p. 239-248.
Earquhar, O.C (1980): Geologic Processes affecting the stability of rock slopes along Massachusetts highways. Eng. Geology 16:133-145
Ejedawe JE, Coker SJL, Lambert-Aikhionbare DO, Alofe KB, Adoh FO (1984). Evolution of oil-generative window and oil and gas occurrence in Tertiary Niger Delta Basin: American Association of Petroleum Geologists, v. 68, p. 1744-1751.
Evamy BD, Hareboure J, Kemerling P, Knaap WA, Molly FA, Rowland PH (1978). Hydrocarbon habitat of Tertiary Niger Delta: American Association Petroleum Geology, V62, 1-39.
Frankl FJ, Cordry EA (1967). The Niger Delta oil province recent development onshore and offshore: Maxico city, 7th would Petroleum congress proceedings, V. 1B 195-208.
Haack RC, Sundaraman P, Diedjomahor JO, Xiao H, Gant NJ, May ED, Kelsch K (2000). The Niger Delta petroleum systems, Nigeria. In: Mello, M.R., Katz, B.J. (Eds.), Petroleum Systems of South Atlantic Margins. American Association of Petroleum Geologists Bulletin, vol. 73, pp. 213–231.
Head, K.H (1988): Manual of soil laboratory testing, vol.2, Plymoth Devon. pp747.
Nwachukwu JI, Chukwurah PI (1986). Organic matter of Agbada Formation, Niger Delta, Nigeria: American Association of Petroleum Geologists Bulletin, v. 70, p. 48-55.
Obiefuna, G.I, A.Nur, A.U. Baba and N.E. Bassey (1999): Geological and Geotechnical Assessment of selected gully sites in Yola Area, North –East Nigeria, Journal of Env. Hydrology San Antonio. Vol.7 paper 6.
Offodile M.E (1976): A Review of Geology of Benue Trough Inc. C.A.Kogbe, (Ed) Geology of Nigeria, pp. 28-46
Offodile, M.E (1992): Approach to Groundwater study and Development in Nigeria. Mecon Services Limited PP 74-77.
Okagbue, C.O and Uma, K.O (1988): The impact of geology on the performance of a bituminous surfaced pavement; a case study from southeastern Nigeria Journal of African Earth science (17) (1)157-164
Reijers TJA (1996). Selected Chapters on Geology-sedimentary Geology and Sequence Stratigraphy in Nigeria. SPDC Course Handbook (Field Guide) 121p.
Short KC, Stauble AJ (1967). American Association Petroleum Geology Bulletin, 51,716.
Weber KJ (1987). Hydrocarbon distribution patterns in Nigerian growth fault structures controlled by structural style and stratigraphy: Journal of Petroleum Science and Engineering, v. 1, p. 91-104.
Weber KJ, Daukoru EM (1975). Petroleum geology of the Niger Delta: Proceedings of the Ninth World Petroleum Congress, volume 2, Geology: London, Applied Science Publishers, Ltd., p. 210-221.
Weinert H.H. (1968): Engineering petrology for roads in South Africa Eng. Geol. 2 (6) 363-395.