Abstract
Swelling and shrinkage of expansive soils occur mainly due to a change in the moisture regime and pose serious problems to foundations causing damage to structures founded on them. However, construction on this type of soil requires a good companion for the recognition of identification, characterization of their swelling potential and Treatment processing. In this work we are interested by two aspects: 1) The first is on the tests recommended for the identification of diferants expansive soils in the region of Tlemcen in the north western Algeria. 2) The second is to perform stabilization tests on remolded samples by salts (KCl Potassium Chloride, Magnesium Chloride MgCl2) with deffrants concentrations and see their influence on physic-chemical parameters and swelling. The results obtained show that stabilization by the addition of salts modifies the physico-chemical characteristics of soil and the results are quite satisfactory in significantly reducing the phenomenon of swelling, as regards the effect of salt on the swelling pressure it varies from salt to another and concentration to another.
Highlights
IntroductionThe presence of montmorillonite clay in these soils imparts them high swell–shrink potentials (Chen, 1988)
Expansive soils are mostly found in the arid and semi-arid regions of the world.The presence of montmorillonite clay in these soils imparts them high swell–shrink potentials (Chen, 1988)
In this work we are interested by two aspects: 1) The first is on the tests recommended for the identification of diferants expansive soils in the region of Tlemcen in the north western Algeria
Summary
The presence of montmorillonite clay in these soils imparts them high swell–shrink potentials (Chen, 1988). Low rainfall has hindered the weathering of the active montmorillonite mineral into low active clay types such as illite and kaolinite. These soils must be initially unsaturated at some water content. If the unsaturated soil gains water content, it swells. If a decrease in water content occurs the soil shrinks. We include two pathological cases the first in the east and the second in South of Algeria:. To resolve this problem in practice, many stabilization methods are available; we are interested in the stabilization by the addition of minerals salts
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
