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43. THE EFFICACY OF POLYTHENE BAGS IN PRESERVING WATER CONTENT IN LATERITIC SOILS UNDER VARYING ATMOSPHERIC CONDITION by E.O. Obroku and O.O. Obhielo Volume 50 (March, 2019 Issue)
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THE EFFICACY OF POLYTHENE BAGS IN PRESERVING WATER CONTENT IN LATERITIC SOILS UNDER VARYING ATMOSPHERIC CONDITION

E.O. Obroku and O.O. Obhielo

Department of Civil Engineering, Igbinedion University Okada, Edo State.

Abstract

Moisture content is one of the most important properties of any given soil. This research seeks to evaluate the efficacy of using polythene bags to package soil from the point of collection at site to the point of carrying out engineering tests on them. Two conditions of exposure were evaluated, one at room temperature for a period of 7 days and the other under sunlight exposure for up to 7 hours. One to three packaging layers was investigated in all variations. The accuracy and efficacy of the polythene bags was evaluated using graphical and statistical tools. The result showed that there is no significant difference between the moisture content of the samples stored under the various conditions and using different packaging because the Anova Coefficient, “F”, value calculated is less than the critical “F” value for the single Anova analysis. Samples stored using one layer of packaging material if well protected from puncturing can equally serve to preserve the moisture content in soils for a period of 7 days. The results would be of great assistance to Geotechnical engineers who finds it easier and cheaper to use these polythene bags during site investigation for packaging soil samples. 

Keywords: moisture content, polythene bags, sunlight, atmospheric condition, Anova

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