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.

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