Integration of VLF-EM and VES data for pavement failure investigation in a typical basement complex terrain of southwestern Nigeria-Reference-Cited by-同舟云学术

Integration of VLF-EM and VES data for pavement failure investigation in a typical basement complex terrain of southwestern Nigeria

Published:2022-12-01 Issue:2 Volume:69 Page:105-117
ISSN:1854-7400
Container-title:Materials and Geoenvironment
language:en
Short-container-title:

Author:

Oyedele Akintunde A.¹,Bawallah Musa A.²,Akinwamide Joshua T.³,Ilugbo Stephen O.⁴,Ogunyebi Segun N.⁵

Affiliation:

1. 1 Department of Physics, Ekiti State University , Ado Ekiti , Nigeria

2. 2 Department of Applied Geophysics, Federal University of Technology , Akure , Nigeria

3. 3 Department of Civil Engineering, The Federal Polytechnic , Ado – Ekiti , Nigeria

4. 4 Department of Physics, Lead City University , Ibadan , Nigeria

5. 5 Department of Mathematics, Ekiti State University , Ado – Ekiti , Nigeria

Abstract

Abstract Geophysical investigations involving very low frequency electromagnetic (VLF-EM) and vertical electrical sounding (VES) techniques were deployed to study the pavement failure along a major road in a typical basement complex terrain of southwestern Nigeria. This study was designed to assess the failure and provide a basis for ultimate engineering design. The study delineated a 3- to 4-layer geoelectric sequence: a topsoil of thickness varying from 0.4 to 1.2 m, a spectrum of clayey materials of thickness varying from 1.9 to 14.5 m and a weathered/fractured basement occurring at depths of between 3.6 and 15.0 m. The shallow basement indicated low bearing capacity, with resistivity values ranging from 62.1 to 377.9 Ωm. The presence of clay/clayey materials, linear features and the effect of rising water table within the influence zone underlined the pavement failure. This information will facilitate appropriate designing, soil improvements and selection of materials for road construction that can stand the test of time.

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics

Link

https://www.sciendo.com/pdf/10.2478/rmzmag-2021-0021

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