GEOTECHNICAL PROPERTIES OF LATERITIC SOIL STABILIZED WITH CORN COB ASH

This study assesses geotechnical properties of lateritic soil using corn cob ash (CCA). Preliminary tests were carried out on the soil sample for classification purposes. California Bearing Ratio (CBR), Unconfined Compressive Strength (UCS) and compaction tests were performed on both the soil sample...

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Bibliographic Details
Published in:Acta Technica Corvininesis 2019-01, Vol.12 (1), p.73-76
Main Authors: Nnochiri, Emeka Segun, Adetayo, Oluwaseun Adedapo
Format: Article
Language:English
Subjects:
Ashes
California bearing ratio
Cement
Civil engineering
Compressive strength
Concrete
Corn
Drinking water
Geotechnical engineering
Highway construction
Moisture content
Penetration tests
Researchers
Roads & highways
Science
Soil classification
Soil compaction
Soil moisture
Soil properties
Soil stabilization
Values
Weight
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Summary:This study assesses geotechnical properties of lateritic soil using corn cob ash (CCA). Preliminary tests were carried out on the soil sample for classification purposes. California Bearing Ratio (CBR), Unconfined Compressive Strength (UCS) and compaction tests were performed on both the soil sample and the stabilized lateritic soil, which was stabilized by adding CCA in percentages of 2, 4, 6, 8 and 10 respectively by weight of the soil. The results showed that the addition of CCA reduced the values of Maximum Dry Density (MDD) from 1345kg/m3 at 0% CCA to 1284kg/m3, the Optimum Moisture Content (OMC) increased from 14.95% to 20.20%, both at 10% CCA. The unsoaked CBR values increased from 9.25% at 0% CCA to 28.20%, the UCS values increased from 495kN/m2 to 560kN/m2, for both CBR and UCS, the peak values were at 8% CCA. It was therefore concluded that CCA performs satisfactorily as a cheap stabilizing agent for stabilizing lateritic soil especially for subgrade purposes.
ISSN:2067-3809