Title of article :
Early-agebehaviourofconcretenuclearcontainmentsOriginalResearchArticle
Author/Authors :
Benboudjema، Farid نويسنده , , J.M.Torrenti، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
Anumericalmodelhasbeendevelopedtopredictearly-agecrackingformassiveconcretestructures.Takingintoaccountcreepatearly-ageisessentialifonewantstopredictquantitativelytheinducedstressesifautogenousorthermalstrainsarerestrained.Becausecreepstrainsmayrelaxinternalstresses,acreepmodelwhichincludestheeffectsofhydrationandtemperatureisused.Forthepredictionofcracking,asimpleelasticdamagemodelisused.Numericalsimulationsareperformedinordertopredictthebehaviourofamassivewallandaconcretecontainmentofanuclearpowerplant.Theyshowthatsignificantrelaxationofstresses(duetocreep)occursonlyafterabout10days,aftercrackingoccurs.Moreover,sincetemperatureinconcretemayreachimportantvaluesinmassiveconcretestructures,itappearsthateffectoftemperatureoncreepmustbetakenintoaccountforanaccuratepredictionofcracking.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
