PRE-FOUNDATION COMPETENCY AND CORROSSIVITY STUDY: A CASE STUDY OF CANAL VIEW ESTATE, ISOLO, LAGOS
S. MATTHEW *
Department of Physical Science, Yaba College of Technology, Nigeria.
A. M. KAMIL
Department of Physical Science, Yaba College of Technology, Nigeria.
C. A. AKINOLA
Department of Physical Science, Yaba College of Technology, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Constant separation traversing and Vertical Electrical Sounding (VES) techniques have been used in Canal View Estate, Isolo, Lagos, Southwest Nigeria to determine subsurface competency and corrosivity evaluation for structural development and other civil engineering applications such as underground pipeline for sewage and petroleum product transportation in the area. Twelve vertical electrical soundings (VES) and five 2D Wenner data were acquired from five different traverses established in the study area. Models obtained from 1D inversion of each traverse were used for construction of geo-electric sections which exhibit the main geo-electric characteristics of the geological units present in the area. Data obtained for each of the traverses in the 2D Wenner array were used to present Inverse Model Resistivity Sections. The interpreted results showed that the geoelectric sections consist of four to five geoelectric layers namely: the topsoil, clayey sand, clay, sandy clay and sand. The investigation revealed the fourth and fifth layers, interpreted as Sand, to be most competent and essentially non corrosive unit for shallow foundation for small to medium engineering structures and buried pipelines. These layers have thickness values that range between 9.8m to 44.0m and resistivity values of about 234.8Ωm to 6844.5Ωm.
Keywords: Inversion, soil competence, soil corrosivity, engineering structures, canal view
How to Cite
References
Adesida A, Faleye ET, Fatoba J. Electrical resistivity survey for corrosive soils at WAPCO, Ewekoro Factory, Ogun State, Nigeria. Journal of Science and Technology Research. 2002;1(1):22-32.
Adegbola RB, Oseni SO, Sovi ST, Oyedele KF, Adeoti L. Subsurface characterization and its implications using the electrical resistivity survey: Case with LASU Foundation Programme Campus Badagry, Lagos State, Nigeria. Nature and Science. 2010;8(8).
Adeoti L, Oyedele KF, Olowookere JO, Adegbola RB. Assessment of leachate effect using electrical resistivity imaging and hydrochemical methods in a dumpsite, Lagos, Nigeria, Journal Sci-Tech. & Environ. 2008;8 (1&2):54-61.
Falae PO. Application of electrical resistivity in buildings foundation investigation in Ibese South western, Nigeria. Asia Pacific Journal of Energy & Environment. 2014;1(2).
Ibitoye FP, Ipinmoroti FV, Mudasiru S, Akinluwade JK, Adeyinka TT, Adelana RA. Application of geophysical methods to building foundation studies. International Journal of Geosciences. 2013;4:1256-1266.
Fatoba JO, Salami BM, Adesida A. Structural failure investigation using Electrical Resistivity method: A case study of Amafor Ihuokpala, Enugu, South Eastern, Nigeria. Journal of Geology and Mining Research. 2013;5(8): 208 – 215.
Ahmed MY. Mapping the Pliocene clay deposits using remote sensing and its impact on the urbanization developments in Egypt: Case study, East Solhag area. Journal of Geotechnical Geological Engineering. 2008; 26:579-591.
Gowd SS. Electrical resistivity surveys to delineate ground water potential aquifers in Peddavanka water shed, Ananater pur Distict andhra prodesh India; 2004. Available:http://www.corrosion-doctors.org/cp/soil-resist.htm
Neil A, Ahmed I. A generalized protocol, for selecting appropriate geophysical techniques Dept. of Geol. And Geophs. University of Missouri-Rolla, Rolla, Missouri. 2006;19.
Al-Sayed EA, El-Qady G. Evaluation of Sea Water Intrusion using the Electrical Resistivity and Transient Electromagnetic Survey: Case Study at Fan of Wadi Feiran, Sinai, Egypt, EGM 2007 International Workshop Innovation in EM, Grav and Mag Methods: a new Perspective for Exploration Capri, Italy; 2007.
Omoyoloye NA, Oladapo MI, Adeoye OO. Engineering geophysical study of Adagbakuja newtown development Southwestern Nigeria, Journal of Earth Science. 2008;2(2):55-63.
Mahmoud II, Mohamaden, Abuo Shagar S, Gamal, Abd. Allah. Geoelectrical survey for groundwater exploration at the Asyuit Governorate, Nile Valley, Egypt, JKAU: Mar. Sci. 2009;20:91-108.
Aderemi AO, Oriaku AV, Adewunmi GA, Otitoloju AA. Assessment of groundwater contamination by leachate near a municipal solid waste landfill. African Journal of Environmental Science and Technology. 2011;5 (11):933-940, ISSN 1996-0786.
Emenike EA. Geophysical exploration for groundwater in a Sedimentary Environment: A case study from Nanka over Nanka Formation in Anambra Basin, Southeastern Nigeria: Global Journal of Pure and Applied Sciences, 2001;7/1:1-11.
Philip K, Michael B, Ian H. An Introduction to Geophysical Exploration. Third Edition. 2002; 2.
Melikan RE. Geophysical activity in 1967 applied to engineering construction and groundwater project. Geophysics. 1960;33: 9-11.
Olorunfemi MO, Ojo JS, Sonuga FA, Ajayi O, Oladapo MI. Geoeletric and electromagnetic investigation of the failed koza and Nassarawa earth dams around Katisna, Northern Nigeria. Journal of Mining and Geology. 2000;36(1): 51–65.
Bayowa OG, Olayiwola NS. Electrical Resistivity Investigation for topsoil thickness, competence and corrosivity evaluation: A case study from Ladoke Akintola, University of Technology, Ogbomoso, Nigeria. 2nd International Conference on Geological and Civil Engineering. 2015;V80.11.
Blyth FGH, de Freitas MH. Geology for Engineers (7th Ed) Edward Arnold, London. 1984;325.
Idornigie AI, Olorunfemi MO. Electrical resistivity determination of subsurface layers, subsoil competence and soil corrosivity at an engineering site location in Akungba–Akoko, Southwestern Nigeria. Ife Journal of Science. 2006;8:22-32.
Awangku I, Awangku S, Halim S. Ground penetrating radar for subsurface mapping: preliminary result. Geoinformation Science Journal. 2009;9(2):45-62.
Daniels DJ. Ground-penetrating radar-2nd edition. IEE Radar, Sonar, Navigation and Avionic Series 15; 2004.
Loke MH. 2D and 3D electrical imaging surveys. Revised edition. 2001;1-4.