Open AccessGeotechnical Properties of Clayey Soils Induced by the Presence of Sodium Chloride
Author(s) -
Falah H. Rahil,
Kawther Al-Soudany,
Narjis S. Abbas,
Luay Y. Hussein
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/518/2/022064
Subject(s) - atterberg limits , consolidation (business) , geotechnical engineering , compaction , water content , soil water , plasticity , compressive strength , clay soil , moisture , soil science , geology , materials science , composite material , accounting , business
The presence of appreciable quantities of soluble salt indicates that engineering properties of clayey soils may change in the presence of percolating water. Hence, an attempt was made in laboratory investigation to study the geotechnical properties of clayey soils mixed with (0%, 5%, 10% and 15% by weight) of sodium chloride. Three type of clayey soils used having plasticity indices (12, 26 and 44%) were taken from three sites in Baghdad. Test Atterberg limits, unconfined compression, specific gravity, compaction and consolidation test, were conducted to investigate the effect of salt content on soil properties. The results showed that the plasticity index, optimum moisture contents, compression index, and unconfined compressive strength decrease with increasing salt content. The max dry unit weight slightly increases with increase salt content while it increases up to 5% salt then decreases for high plasticity.