Key words: soil organics, polysaccharides, kaolinite, rheology, floes, xanthan, dextran, soil structure, zeta potential, kaolinite–polysaccharide system, differential viscosity, Bingham yield stress.
Mots clés : matières organiques du sol, polysaccharides, kaolin, rhéologie, flocons, xanthan, dextran, structure du sol, potentiel zêta, ensemble kaolin–polysaccharides, viscosité différentielle, contrainte limite de Bingham.