Abstract
This paper presents the mathematical relationship of electrical resistivity and dry density in compacted soil through electrical signal for geotechnical investigations. Monitoring of the compacted soil through electrical conductivity plays an important role in the construction of highway embankments, earth dams and many other engineering structures. Conventionally, soil compaction is measured through the estimation of maximum dry density at optimum moisture contents in laboratory tests. This conventional testing method is very tedious and costly especially when a lot of samples are involved. In this work, a mathematical model is developed to estimate the soil compaction on-site through electrical resistivity corresponding to the percentage of moisture contents in the compacted soil. The practical usage of the derived mathematical model is demonstrated using several soil samples for various types of soil.
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