Détermination de la courbe de retrait de la phase argileuse à partir de la courbe de retrait établie sur échantillon de sol non remanié. Application à une séquence de sols de Côte-d'Ivoire (Determination of the clay shrinkage curve using the shrinkage curve of the undisturbed soil sample. Application to a soil sequence in Ivory Coast)

Erik Braudeau (1) , Ary Bruand (2)

1 ORSTOM - Bondy
2 ISTO - Institut des Sciences de la Terre d'Orléans

The structural shrinkage model (model MRS) was applied to the shrinkage curve of undistributed soil samples which were collected from a soil sequence in Ivory Coast. The micro-pore volume which was calculated with the model MRS at the shrinkage limits is consistent with the pore volume of the clayey phase which was measured by mercury porosimetry. Then, the shrinkage curve of the clayey phase was calculated; it showed high variation of the properties for the studied soils

Mots clés: soils; Ivory Coast; clay; models; porosity; variations; water content; swelling; West Africa; clastic sediments; sedimentary rocks

Domaines: Interfaces continentales, environnement

Erik Braudeau, Ary Bruand. Détermination de la courbe de retrait de la phase argileuse à partir de la courbe de retrait établie sur échantillon de sol non remanié. Application à une séquence de sols de Côte-d'Ivoire (Determination of the clay shrinkage curve using the shrinkage curve of the undisturbed soil sample. Application to a soil sequence in Ivory Coast). Comptes Rendus de l'Academie des Sciences Serie II, 1993, 316, pp.685-692. ⟨hal-00122537⟩