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Soil moisture content and density prediction using laboratory resistivity experiment

Zainal Abidin, Mohd Hazreek and Saad, Rosli and Ahmad, Fauziah and Wijeyesekera, Devapriya Chitral and Yahya, Ahmad Shukri (2013) Soil moisture content and density prediction using laboratory resistivity experiment. International Journal of Engineering and Technology, 5 (6). pp. 731-735. ISSN 1793-8236

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Abstract

Natural soils are an intimate mixture of solid, liquid and gas phases. This study establishes a correlation for moisture content and density of a soil with its electrical resistivity. In the past, most of the conventional geotechnical site investigation required bulky and heavy equipment to determine the geotechnical parameters necessary for design and construction purposes. Consequentially, time and cost of the project is increased especially when dealing with some difficult site such as on mountainous terrain. This study is based on laboratory soil box resistivity meter observations made on soils mixed with additions of consistent increments of 1-5 % of water to 1500 gram of remolded soils in loose condition. At least 24 repetitive resistivity test observations were made and the moisture content and soil density was determined concurrently for each of the tests. The observations showed that the electrical resistivity variation decreased in a curvilinear manner with increasing percentage of moisture content. A regression equation and coefficient of determination, R2 for moisture content against soil electrical resistivity value was established by moisture content, w = 152.87ρ-0.312 (ρ = soil electrical resistivity) and R2 = 0.7718 respectively. While a regression equation and R2 value for bulk density versus soil electrical resistivity value was observed to be ρbulk = -0.107 ln (ρ) + 1.7249 and 0.7016 respectively. Hence, a viable method is demonstrated where the electrical resistivity value was applicable and has a great potential for geotechnical data prediction of parameters such as moisture content and soil density.

Item Type: Article
Uncontrolled Keywords: correlation; moisture content; soil electrical resistivity and soil density
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA703-711 Engineering geology. Rock mechanics. Soil mechanics.
Divisions: Faculty of Civil and Environmental Engineering > Department of Infrastructure and Geomatic Engineering
Depositing User: Normajihan Abd. Rahman
Date Deposited: 28 Jun 2016 03:01
Last Modified: 28 Jun 2016 03:01
URI: http://eprints.uthm.edu.my/id/eprint/8121
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