Analyse des sinistres liés au retrait- gonflement des sols argileux en Gironde (original) (raw)
The article presents the first geotechnical measu rements carried out on swelling clays of a Plio-quaternary geological formation and coming from four damaged sites of the same district of the Pessac's commune in Bordeaux a gglomeration (Gironde, France). In the first part of this study, the clayey geological Brach formation is detailed from the lithological point of view. The clayey soils were characterized from geotechnical parameters the easiest to obtain in laboratory (plasticity, blue methylene absorption, content of clay, etc.), what has allowed establishing a classification of the potent ials of swelling and shrinkage of each site. In the second part, the study focuses on the analys is of the influence of previous geotechnical parameters. MOTS -CLES : ARGILES , RETRAIT -GONFLEMENT , DESORDRES , ALEA , CARACTERISATION GEOTECHNIQUE , VARIABILITE