Study of the mechanical properties of clay containing smectite and carbonate

摘要: The correlation between physicochemical properties and mechanical behavior of clays is the subject many studies [1,2]. are particularly significant insofar as they involve several disciplines, remediation, drilling muds, civil engineering, storage toxic radioactive waste. smectite used in this work from southern west Tunisia, Oued Tfal near town Gafsa noted OT. Work included action on characterization, raw clay treated with hydrochloric acid purified. This aims at studying influence pure fraction, including compensating cations hydromechanical clay. thermal study sample gives a percentage 32.5% carbonate elimination carbonates by attack controlled following results: If treatment 0.5M represents departure total carbonates, there probably altered layers fraction. To eliminate excess (6.03%), was 0.4 M HCl without deterioration structure silicate three samples (OT) purified (OTNa) (0.4M) put it clearly relationship cation exchange capacity swelling pressure.