Prediction of Compression and Swelling Index Parameters of Quaternary Sediments from Index Tests at Mersin District

Abstract

Compression and swelling index parameters, obtained from consolidation test, are used to calculate settlement for normally and over-consolidated soils respectively. When the conditions are not suitable to perform that test, various alternative methods are investigated to get those parameters without carrying out the consolidation test. In this study, a data set including 18 marine and 40 terrestrial undisturbed Quaternary sediments was taken from southern parts of Mersin City, Turkey. Parameters obtained from consolidation test and index tests were correlated by applying simple and multiple regression analyses. The initial void ratio is the main determiner for estimating both the compression and swelling index parameters. Although attempts have been made to correlate parameters with wide distribution of samples, there is no study done with narrow range. The database was divided to subgroups according to the Plasticity chart to obtain more reliable equations. To test the significance of regression analyses, T and F-tests were done. With this study, statistically significant new equations with very high correlation coefficients are proposed.

Numerical Modeling for Prediction of Compression Index from Soil Index Properties in Jimma town, Ethiopia

“…The correlation results of the compression index (Cc) for this study are between 0.227 and 0.33. Coefficient of compressibility (Cc) values are found to be relatively almost similar to those obtained for undisturbed soil samples by Jayalekshmi and Elamathi (2020) and according to Alptekin and Taga (2019), the soils are soft clay that is highly compressible when comparison with the current study. Hence, many researchers have used these approaches to determine the value of Cc from basic soil properties (Yoon, Kim, and Jeon 2004;Dwivedi, Kumar, and Jain 2016;Onyejekwe, Kang, and Ge 2015).…”

Single Pile FEM Modeling: Ultimate Capacity Determination of Bored Piles Embedded in Silty-Sands Using Modified Drucker-Prager Cap Model

“…Table 4 and Table 5 show the regression equations used for obtaining the values of Cc and Cs, respectively, to obtain the hardening parameter using (7). Most of these regression equations have strong positive correlations applicable for wide types of soils [25,26,30]. These equations are applicable for all-natural soils, low plasticity soils, normally-consolidated soils, or clay.…”

“…This method was never done before in FEM pile modeling. These proposed equations are handy to apply in any problems since the parameters required are typical soil parameters [25][26][27][28][29][30] and can be found in typical geotechnical reports.…”

A Survey on the Relationships between Compression Index, Coefficient of Consolidation, and Atterberg Limits

“…Alptekin and Taga [34] performed Atterberg tests on 58 soil samples collected from Turkey's Mersin city; samples were selected as 18 marine and 40 terrestrials. 4 were not plastic, so Atterberg tests were not performed on these four samples.…”