Site characterization for engineering purposes using geophysical and geotechnical techniques

Geophysical and geotechnical techniques were applied to determine the suitability of the sub-surface structure of Akole community area, Abeokuta, Nigeria, for the construction of engineering structures (CES). Four vertical electrical soundings (VES) were carried out, and 10 samples from different po...

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Main Author: Alabi Aderemi A.
Format: Article
Language:English
Published: Sciendo 2021-05-01
Series:Materials and Geoenvironment
Subjects:
Online Access:https://doi.org/10.2478/rmzmag-2020-0019
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spelling doaj-4bc4cd9e41234b30a793714294e38d6a2021-09-05T14:01:28ZengSciendoMaterials and Geoenvironment1854-74002021-05-0167419720710.2478/rmzmag-2020-0019Site characterization for engineering purposes using geophysical and geotechnical techniquesAlabi Aderemi A.0Department of Physics, Federal University of Agriculture, Abeokuta, Ogun State, NigeriaGeophysical and geotechnical techniques were applied to determine the suitability of the sub-surface structure of Akole community area, Abeokuta, Nigeria, for the construction of engineering structures (CES). Four vertical electrical soundings (VES) were carried out, and 10 samples from different points at 1 m depth were analysed to determine soil moisture content, specific gravity (SG), Atterberg limits and California bearing ratio (CBR). The geoelectric sections revealed a maximum of five layers with the typical sounding curves of AKH and HKH types. Sieve analysis and tests for compaction limit, Atterberg limits, SG, optimum moisture content and maximum dry density for compaction limit revealed that samples SP2, SP3, SP4, SP6, SP7, SP8, SP9 and SP10 are of low plasticity with SG values that fall within the permissible range, while SP1 and SP5 are of medium plasticity and their SG values fall below the range of standard specifications. CBR analysis showed that SP1 and SP5 have low load-bearing capacities. VES 1 and 2, linked with SP1 and SP5, are considered unstable and unsuitable to support the CES with shallow foundations; however, excavation of weak layers up to a depth of 5 m and reinforcement will enable the support.https://doi.org/10.2478/rmzmag-2020-0019electrical resistivityengineering structuregrain sizeatterberg limitscompaction testelektrična upornostinženirski objektivelikost zrnatterbergerjeve mejezgoščevalni preiskus
collection DOAJ
language English
format Article
sources DOAJ
author Alabi Aderemi A.
spellingShingle Alabi Aderemi A.
Site characterization for engineering purposes using geophysical and geotechnical techniques
Materials and Geoenvironment
electrical resistivity
engineering structure
grain size
atterberg limits
compaction test
električna upornost
inženirski objekti
velikost zrn
atterbergerjeve meje
zgoščevalni preiskus
author_facet Alabi Aderemi A.
author_sort Alabi Aderemi A.
title Site characterization for engineering purposes using geophysical and geotechnical techniques
title_short Site characterization for engineering purposes using geophysical and geotechnical techniques
title_full Site characterization for engineering purposes using geophysical and geotechnical techniques
title_fullStr Site characterization for engineering purposes using geophysical and geotechnical techniques
title_full_unstemmed Site characterization for engineering purposes using geophysical and geotechnical techniques
title_sort site characterization for engineering purposes using geophysical and geotechnical techniques
publisher Sciendo
series Materials and Geoenvironment
issn 1854-7400
publishDate 2021-05-01
description Geophysical and geotechnical techniques were applied to determine the suitability of the sub-surface structure of Akole community area, Abeokuta, Nigeria, for the construction of engineering structures (CES). Four vertical electrical soundings (VES) were carried out, and 10 samples from different points at 1 m depth were analysed to determine soil moisture content, specific gravity (SG), Atterberg limits and California bearing ratio (CBR). The geoelectric sections revealed a maximum of five layers with the typical sounding curves of AKH and HKH types. Sieve analysis and tests for compaction limit, Atterberg limits, SG, optimum moisture content and maximum dry density for compaction limit revealed that samples SP2, SP3, SP4, SP6, SP7, SP8, SP9 and SP10 are of low plasticity with SG values that fall within the permissible range, while SP1 and SP5 are of medium plasticity and their SG values fall below the range of standard specifications. CBR analysis showed that SP1 and SP5 have low load-bearing capacities. VES 1 and 2, linked with SP1 and SP5, are considered unstable and unsuitable to support the CES with shallow foundations; however, excavation of weak layers up to a depth of 5 m and reinforcement will enable the support.
topic electrical resistivity
engineering structure
grain size
atterberg limits
compaction test
električna upornost
inženirski objekti
velikost zrn
atterbergerjeve meje
zgoščevalni preiskus
url https://doi.org/10.2478/rmzmag-2020-0019
work_keys_str_mv AT alabiaderemia sitecharacterizationforengineeringpurposesusinggeophysicalandgeotechnicaltechniques
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