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A Study on Correlations for Void Ratio, Coefficient of Uniformity and Coefficient of Curvature for Determination of Relative Density for Sands  

Im, Soyeong (Dept. of Civil and Environmental Engineering, Hanyang University)
Jin, Yongguo (Dept. of Civil and Environmental Engineering, Hanyang University)
Chun, Byungsik (Dept. of Civil and Environmental Engineering, Hanyang University)
Publication Information
Journal of the Korean GEO-environmental Society / v.14, no.3, 2013 , pp. 13-17 More about this Journal
Abstract
Determination of geotechnical characteristics of soil is either to use the field samples to measure the characteristics of soil through laboratory test or measuring the characteristics directly in the field. Field test can be derived similar value by considering characteristics of site and laboratory test can be confirmed the characteristic of soil by testing with field samples. This article describes relative density as the measure of compaction for cohesionless soils and presents several simple and mathematical relationships to help engineers estimate needed parameters for relative density calculations. The main purpose of this research is to investigate possible correlations between coefficient of uniformity, coefficient of curvature, maximum and minimum void ratio, mean grain size. Results show a linear relationship between the minimum and maximum void ratios and a power function relationship between coefficient of uniformity and the limiting void ratios. Void ratio range, which is the difference between the maximum and minimum void ratios, appeared to be log normally distributed but showed no simple mathematical fit to the data. these results were shown to help engineers estimate needed parameters for relative density calculations.
Keywords
Relative density; Maximum and minimum void ratio; Grain size; Coefficient of uniformity; Coefficient of curvature;
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