Engineering Evaluation of the Lateritic Soils Around Nepa and Environs, North Central Partof Nigeria for Road Constructions

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Engineering Evaluation of the Lateritic Soils Around Nepa and Environs, North Central Partof Nigeria for Road Constructions

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Abstract

The need for adequate assessment of the lateritic soils as a construction material will help to prevent failure of civil engineering structures like roads when used. The results of geotechnical test of the lateritic soils of the study area reveals that the Atterberg limit which consist of; the Liquid limit (LL), Plastic limit (PL), Plasticity index (PI) and Linear shrinkage (LS) ranged from 33.0%-43.0%, 16.23%-26.37%, 7.63%-24.77% and from 21.12%-34.12%. The percentage passing of the soil samples from the sieve analysis ranged from 50.88%-91.08%, Soil pH values from 6.5 7.2 and the Specific gravity (SG) from 2.57-2.73. The moisture content of the soil samples ranges from 12.92% 23.26%. The compaction test revealed that; the Optimum Moisture Content (OMC) of the soil samples ranged from 3 13.22%-20.60% while that of Maximum Dry Density (MDD) is between 1.59g/cm-1.88g/cm . The soaked and the 3 un-soaked California Bearing Ratio (CBR) values of the soils range from 50.88%-96.51% and from 30.88%-76.51%. The findings have reveals that the lateritic soils are characteristically fair to poor and this may results to road failure when used. The lateritic soils were classified as silty-clay materials and will not be suitable as a good fill material for road construction project due to poor bearing capacity. This information about the engineering evaluation of the soil obtained will serve as base-line information for future road foundation design and construction in the study area to avoid loss of lives and properties. It is recommended that adequate engineering, geophysical and geological investigation of the soil is required to ensure the stability for the road constructions.


Publication Info:

Author: Emmanuel, V. , John,S.M. , Okwaraeke,M.E. and Rimamtawe, A.A.

Volume: 57

Issue: September

Published By: Journal of Mining and Geology, 2024-09-01

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