Practical aid to identify and evaluate plasticity, swelling and collapsibility of the soil encountered in badrah, shatra and nassirya cities

Abstract EN

-The plasticity properties of soil are sufficiently variable to offer a simple but practical aid to identification.

This can be done by using their Atterberg limit values as parameters for an identification chart.

This paper attempts to identify and evaluate major soil types encountered within the areas of Badrah, Shatra and Nassirya Cities based on a large number of laboratory test results conducted to determine its index and physical properties.

A new line on plasticity chart was established and corresponding to the mean of more than three hundred plasticity tests.

The swelling characteristics of investigated soil were evaluated using the classification system developed by Savage (2007).

Savage original chart was modified and new chart established at which the estimated gross plasticity index, using an advanced statistical analysis software package named "Number Cruncher Statistical System (NCSS)", with assistance of resulting functional relation and LL and PL can be used to asses the suspect soil to swell quickly with no need to conducted sieve analysis test.

New chart developed to identify the collapsibility of the investigated soil according to Holtz and Hilf method.

The LL and w were used to evaluate the collapsibility of soil from the established limiting curves