"Text" . . . "Throughout this thesis, we are interested in hydro-mechanical behavior of an eco-geo-material based on raw earth. Different aspects have been treated viewing the optimization of his formulation as well as its interactions with the reinforcements. We have tried to resolve the following three scientific locks: the optimization of the physical-chemical clay-binders\u2019 interactions, the identification of the mechanisms of cracking in relation with the suction and the electrochemical soil-iron interactions. Adding lime imposes the behavior of the soil and improves its resistance by making the environment more alkaline. We showed that we can follow soil-binders\u2019 interactions by using the electrical conductivity technique. During desiccation of a clayey soil, global shrinkage is homogenous. A heterogonous local deformation induces tensile stress responsible of cracking. Adding reinforcement reduces crack ratio by a factor 10. Suction generated during drying is interpreted in terms of tensile stresses. Interaction between earth and metal allows oxydo-reduction reactions producing corrosion. Three type of clay were tested. Corrosion speed is about 3\u03BCm/year." . "Development of an eco-geo-material based on raw earth." . . "Durant ce travail de th\u00E8se, nous nous sommes int\u00E9ress\u00E9s au comportement hydrom\u00E9canique d\u2019un \u00E9co-g\u00E9o-mat\u00E9riau \u00E0 base de terre crue. Diff\u00E9rents aspects ont \u00E9t\u00E9 trait\u00E9s visant l\u2019optimisation de sa formulation et aussi ses interactions avec les renforts. Nous avons tent\u00E9 de lever trois verrous scientifiques : l\u2019optimisation des interactions physico-chimiques argiles-liants, l\u2019identification des m\u00E9canismes de fissuration en relation avec la succion, et les interactions \u00E9lectrochimiques sol-armatures en acier. L\u2019ajout de la chaux impose le comportement du sol \u00E0 court terme et favorise le gain en r\u00E9sistance en rendant le milieu plus alcalin. Nous avons montr\u00E9 qu\u2019\u00E0 l\u2019aide d\u2019une mesure macroscopique, la conductivit\u00E9 \u00E9lectrique, nous pouvons suivre les interactions sol-liants. Lors de la dessiccation d\u2019un sol argileux, le retrait global est homog\u00E8ne. Une d\u00E9formation locale h\u00E9t\u00E9rog\u00E8ne induit des contraintes de traction responsables de l\u2019apparition des fissures. L\u2019ajout des renforts r\u00E9duit le pourcentage de fissuration d\u2019un facteur 10. La succion g\u00E9n\u00E9r\u00E9e lors du s\u00E9chage est interpr\u00E9t\u00E9e en termes de contraintes de traction. Le contact entre la terre et l\u2019acier entraine des r\u00E9actions d\u2019oxydor\u00E9duction dont le produit est la corrosion. Trois familles d\u2019argiles ont \u00E9t\u00E9 test\u00E9es. La vitesse de corrosion obtenue est de l\u2019ordre de 3\u03BCm/an." . . . . . . "CORROSION" . . . "Argile -- Liants" . . . . "FISSURATIONS" . "2016" . . "\u00C9laboration d'un \u00E9co-g\u00E9o-mat\u00E9riau \u00E0 base de terre crue" . "TERRE CRUE" . "Th\u00E8ses et \u00E9crits acad\u00E9miques" . "\u00C9laboration d'un \u00E9co-g\u00E9o-mat\u00E9riau \u00E0 base de terre crue" . "INTERACTIONS SOL-LIANTS" . . . . . .