Title of article :
Chemo-mechanicalcouplingbehaviourofleachedconcrete:PartI:ExperimentalresultsOriginalResearchArticle
Author/Authors :
V.H.Nguyen، نويسنده , , H.Colina، نويسنده , , J.M.Torrenti، نويسنده , , C.Boulay، نويسنده , , B.Nedjar، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Abstract :
Thispaperdealswithconcretebehaviourunderchemicalandmechanicaldegradations.Experimentalinvestigationsaredescribedwheretheeffectsofthecalciumleachingprocessofconcreteonitsmechanicalpropertiesarehighlighted.Thecalciumleachingandmechanicaltestsoncementpaste,mortarandconcretesamplesarepresented.Becauseoftheslowkineticsofleachingunderdeionisedwater,anacceleratedmethodhasbeenchosenbyusinganammoniumnitratesolutioninstead.Thespecimensareimmersedintoa6mol/lammoniumnitratesolutionwithacontrolledpHdisposal.Toquantifytheleachingevolution,thedegradationdepthisthenmeasuredatcertaintimeintervalsbymeansofaphenolphthaleinsolution.Theexperimentalresultsshowthechemicaldegradationofthecement-basedmaterialandtheimportantroleofaggregateinthecalciumleachingprocessofconcrete.Compressiontestsofconcretesamplesarealsoperformed.Weobservethatthereisastrongcouplingbetweenthecalciumleachingandthemechanicalbehaviour;asleachinggrows,alossofstiffnessandofstrengthareobservedandasmootherpost-peakbehaviourisnoted.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
