Structural Mechanics of Engineering Constructions and BuildingsStructural Mechanics of Engineering Constructions and BuildingsСтроительная механика инженерных конструкций и сооружений1815-52352587-8700Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)10989ArticlesСтатьиResearch ArticleNUMERICAL MODELING OF MASSE SHRINKING CLAYEY SOILS IN THE DEPRESSION OF LAMA IN THE SOUTH OF BENINNUMERICAL MODELING OF MASSE SHRINKING CLAYEY SOILS IN THE DEPRESSION OF LAMA IN THE SOUTH OF BENINJudicaelKoffiAGBELELEagbelelekoffi@yahoo.frAbaloP' KLA-GerardGBAGUIDI AISSE-GerardDEGAN-Laboratory of Energetics and Mechanics Applied ( LEMA), EcolePolytech- niqued'Abomey-Calavi ( EPAC), Universited'Abomey-Calavi ( UACEcole Nationale Superieure d'Ingenieurs (ENSI) de l'Universite de Lome (UL)Laboratory of Energetics and Mechanics Applied (LEMA),EcolePolytechniqued'Abomey-Calavi ( EPAC), Universited'Abomey-Calavi (UAC)Laboratory of Energetics and MechanicsApplied( LEMA), Ecole Polytechnique d'Abomey-Calavi ( EPAC), Universite d'Abomey-Calavi ( UAC)150420164NO4 (2016)№4 (2016)718012092016Copyright ©; 2016, Structural Mechanics of Engineering Constructions and BuildingsCopyright ©; 2016, Строительная механика инженерных конструкций и сооружений2016Structural Mechanics of Engineering Constructions and BuildingsСтроительная механика инженерных конструкций и сооруженийhttps://journals.rudn.ru/structural-mechanics/article/view/10989This article presents the results of an experimental study about four soil samples coming from Masse, a region crossed by the East depression of LAMA in the south of Benin, where impor- tant damages have been recorded (rising of thefoundations, deformation and cracking of the infrastructures, tearing of the surface coat of pavements...). In the first stage, a physico- mechanical characterization of the soil samples is achieved bylaboratory tests. The second stage of this study was reserved to the numericalmodeling of the shrinkingby basing on the analysis of the behaviour of the curves obtained at the end of the laboratory odometer tests. This approach allowed us to describe the variation of the indication of the voids ratio accord- ing to the loading pressure, to elaborate a mathematical model permitting to simulate the odometer curve of a loading-discharge cycle and to determine the parameters of compressibil- ity. The results show a good quality of the adjustment. A negligible mistake of the order of 0,3% has been recordedphysico-mechanical characterizationevaluationshrinkingmodelingsimulation[ASSIOU. F.Z. et NECHNECH. A. (2011), Retrait et gonflement des marnes argileuses d'Alger � etude d'un risque naturel �, INVA CO2 : Seminaire International INNOVATION et VALORISATION en Genie � Civil et Materiaux de Construction 5P-050 Universite Houari Boumediene Algerie.7 p][Emmanuelle PLAT(2009),Sols argileux et risque secheresse : nouveaux outils et retour d'experience, BATIMAT � Conferences du Forum Qualite & Developpement Durable, Agence Qualite Construction, 39 p.][Zohra DERRICHE et Mustapha KEBAILI (2000), Prevision du gonflement des argiles d'In-Amenas,BULLETIN DES LABORATOIRES DES PONTS ET CHAUSSEES218 NOVEMBRE-DECEMBRE 1998-REF.3865-PP15-23][BEKKOUCHE A., DJEDID A., AISSA MAMOUNE S.M. (2001), An experimental investigation on the assessment of the swelling parameters, IV. International Congress, Eastern Mediterranean University, Gazimagusa, North Cyprus, Vol. 2, pp. 627-633).][A. MEDJNOUN (2014), Analyse, caracterisation, prevision et modelisation du comportement des argiles gonflantes, These de Doctorat, Universite de Mouloud Mammeri de Tizi-Ouzou, 209 Pages.][V. GBAGUIDI et al. (2010), Etude du phenomene de gonflement des sols argileux du bassin sedimentaire cotier au Benin, Journal de la recherche scientifique de l'Universite de Lome, vol. 12, N�2, pp. 19-29][K.J. AGBELELE et al. (2016), Caracterisation physico-mecanique des sols argileux de la depression d'Issaba au Sud-Est du Benin,Afrique sciences, vol. 12, N�2, pp. 206-221.][Ozer et al.(2011), cite par Kelly GUERRIER, Dominique BOISSON et al(2014), Etude du gonflement d'echantillons de marne formation geologique "morne DELMAS" en Haiti,Journees Nationales de Geotechnique et de Geologie de l'Ingenieur JNGG2014 � Beauvais 8-10 juillet 2014,10p.][Joel M. ZINSALO (2012), Cours de Mathematiques pour ingenieurs de l'Ecole Polytechnique d'Abomey Calavi (EPAC), 433 Pages.][J. LERAU (2006), Cours de Geotechnique 1, Chapitres 4, Tome 2, 25p. Structural Mechanics of Engineering Constructions and Buildings, 2016, � 4 71]