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1、LaboratoryofMaterialsandstructuresofCivilEngineering http://www.lcpc.fr/fr/presentation/organigramme/div_lmsgc/TheUMRNavier-LMSGCbringstogethermechanicsandphysicists,modellersandexperimentersaroundthescienceofporous,heterogeneousandgranularcivilengineeringmaterials.Re
2、searchissupportedbymajortechnologicalequipment.TheMagneticResonanceImager(MRI),whichhasbeeninservicefor3yearsandismanagedbytheUMRNavier-LMSGC,makesitpossibletotrackthemovementsofliquidsorphasechangeswithinporousmaterialsaswellaslocaldistortionsofpastyorgranularmaterials
3、. Director:PhilippeCoussotJointÉcoledesPonts–LCPCcentreUnitassociatedwiththeCNRSUMR113(CitéDescartes)Permanentstaff:47including13doctoralstudents Micro-mechanicsandstructuralcalculationsTheaimofthisfirsttopicistodeveloptoolsforthemechanicalbehaviourofstructuresbyusingsc
4、alingmethodsandtheconstructionofbehaviourallawsformulti-phasematerials.Thisapproach,atstucturalcalculationlevel,showsthemechanicallinkagesthatexistbetweenthecomponentelementsofporousorreinforcedmaterials.Troughthemulti-yearCASTORproject,researchersfromtheÉcoledesPontsan
5、dLCPCaretogetherdevelopinganumericaltoolforsizingreinforcedgeotechnicalstucturesbyinclusionsintheCESAR-LCPCsoftware. ParcClubdelaHaute-Maison2,alléeKéplerCitéDescartes,77420Champs-sur-MarneTél.(33)140435441/Fax.(33)140435450and6-8,av.BlaisePascal,CitéDescartes,Champs-su
6、r-Marne77455MarnelaValléecedex2Tel.(33)164153656Fax.(33)164153748 CoupledtransportinporousmediaCivilengineeringmaterials(soils,concretes,wood,rocks)arestronglyinfluencedbythetransportofhumidity,ionsorcolloids,whichcanleadtochemicalreactionssuchasthealkalireactionorcorro
7、sion.Theaimofthissecondtopicistounderstandandconductpredictivemodellingofthephysicsofsuchphenomena,whichdeterminetheusageanddurabilityofsomematerials.Forexample,westudythedryingofporousmaterials(inremovingthesaltfromhistoricmonuments)cryodepollutionofsoils,dryingofsoils
8、byelectro-osmosis,orthemechanicaleffectsofconcreteswellingcausedbychemicalreactions. Reophysicsofpastesandgra
