GEOELECTRICAL INVESTIGATION OF ROAD FAILURE ALONG MINNA-BIDA ROAD, NIGER STATE, NIGERIA
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Date
2020
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FUW Trends in Science & Technology Journal
Abstract
The study is meant to reveal the horizontal and vertical geological discontinuities on the said road that has suffered
repairs in the past. Probable zones of untimely failure along the road are then investigated by variation in
resistivity. The resistivity values for profiles A, B, C, D and F range between 0.10 and 30.4 Ωm; indicating failed
segments which are typical of fractured or fissured zone, as a result of clayey nature of the topsoil/sub-grade soil
on which the road pavement is founded. The stable segment which is characterized by high ranging resistivity
(16.4 – 4628 Ωm) shows no evidence of any major geologic feature such as fault and fractured zone that could
have precipitated failure. The range of values characteristically places the regions in a basement complex area with
the presence of clay-sandstone intercalation. The causes of road pavement failure on the studied road was found to
be majorly as a result of a combination of clayey topsoil/sub grade soils, water-logged sands with characteristically
low resistivity values and thin pavement unable to withstand pressure exerted on the road
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Keywords
Road failure, resistivity, pavement, top soil, failed segment
Citation
10. Rafiu A.A., T.A Adesete, Salako K. A., Adetona A. A., Alhassan U.D, Shehu J, and Udensi E.E (2020) Geoelectrical Investigation of Road failure along Minna - Bida Road, Niger State Nigeria. FUW Trends in Science and Technology Journal, www.ftstjournal.com e-ISSN 2485162, P-ISSN:20485170; August 2020: Vol.5 No.2 pp342-347.