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1、LaboratoryofMaterialsandstructuresofCivilEngineering http://www.lcpc.fr/fr/presentation/organigramme/div_lmsgc/TheUMRNavier-LMSGCbringstogethermechanicsandphysicists,modellersandexperimentersaroundthescienceofporous,heterogeneousandgranularcivilengineeringmaterials.Researchissup
2、portedbymajortechnologicalequipment.TheMagneticResonanceImager(MRI),whichhasbeeninservicefor3yearsandismanagedbytheUMRNavier-LMSGC,makesitpossibletotrackthemovementsofliquidsorphasechangeswithinporousmaterialsaswellaslocaldistortionsofpastyorgranularmaterials. Director:PhilippeCou
3、ssotJointÉcoledesPonts–LCPCcentreUnitassociatedwiththeCNRSUMR113(CitéDescartes)Permanentstaff:47including13doctoralstudents Micro-mechanicsandstructuralcalculationsTheaimofthisfirsttopicistodeveloptoolsforthemechanicalbehaviourofstructuresbyusingscalingmethodsandtheconstructionofb
4、ehaviourallawsformulti-phasematerials.Thisapproach,atstucturalcalculationlevel,showsthemechanicallinkagesthatexistbetweenthecomponentelementsofporousorreinforcedmaterials.Troughthemulti-yearCASTORproject,researchersfromtheÉcoledesPontsandLCPCaretogetherdevelopinganumericaltoolfors
5、izingreinforcedgeotechnicalstucturesbyinclusionsintheCESAR-LCPCsoftware. ParcClubdelaHaute-Maison2,alléeKéplerCitéDescartes,77420Champs-sur-MarneTél.(33)140435441/Fax.(33)140435450and6-8,av.BlaisePascal,CitéDescartes,Champs-sur-Marne77455MarnelaValléecedex2Tel.(33)164153656Fax.(33
6、)164153748 CoupledtransportinporousmediaCivilengineeringmaterials(soils,concretes,wood,rocks)arestronglyinfluencedbythetransportofhumidity,ionsorcolloids,whichcanleadtochemicalreactionssuchasthealkalireactionorcorrosion.Theaimofthissecondtopicistounderstandandconductpredictivemode
7、llingofthephysicsofsuchphenomena,whichdeterminetheusageanddurabilityofsomematerials.Forexample,westudythedryingofporousmaterials(inremovingthesaltfromhistoricmonuments)cryodepollutionofsoils,dryingofsoilsbyelectro-osmosis,orthemechanicaleffectsofconcreteswellingcausedbychemicalrea
8、ctions. Reophysicsofpastesandgra