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1、MaterialsandStructures/Mat6riauxetConstructions,Vol,29,December1996,pp587-593TC107-GCS:GUIDELINESFORTHEFORMULATIONOFCREEPANDSHRINKAGEPREDICTIONMODELSAddendumtoTC107-GCSRecommendation:Creepandshrinkagepredictionmodelforanalysisanddesignofconcretestructure
2、s-ModelB3.ShortformofcreepandshrinkagepredictionmodelB3forstructuresofmediumsensitivityPreparedbyZden~kP.BaY:antandSandeepBawejaDepartmentofCivilEngineering,NorthwesternUniversity,Evanston,IL60208,USAFOREWORDAsimplemodelforthecharacterisationofconcretecr
3、eepmix,leavingonlydependenceonthestrengthandwaterandshrinkageindesignofconcretestructuresofmediumcreepcontentoftheconcretemix.Themodelisjustifiedbystatisti-andshrinkagesensitivityisproposed.Itrepresentsashortenedcalcomparisonswithallthedataintheinternati
4、onallyappro-formofmodelB3whichwaspresentedasadraftRILEMvedRILEMdatabank.Thedifferencesbetweenthepresentrecommendationandisintendedforstructuresofhighsensiti-short-formandmodelB3arediscussedandlimitationsofthevity.ThemainsimplificationcomparedtomodelB3com
5、esshort-formascomparedtomodelB3arenoted.Themodelisfromtheuseofthetog-double-powerlawasthebasiccreepsuitablefordesignofconcretestructures,withtheexceptionofcompliancefunction.TheB3formulaeforpredictingmaterialhighlycreep-sensitivestructuresforwhichthefull
6、modelB3parametersinthemodelaresimplifiedbydroppingthedepen-mustbeused.denceoftheseparametersonthecompositionoftheconcreteiiiiJiiiiiiiiiii1.APPLICABILITYRANGE(thenumbers0.85and720kg/m3or45lbs/ft3are,ofcourse,outsidetherangeofgoodconcretesintoday'sprac-Are
7、centdraftRILEMP,,ecommendation[1]pre-tice).Theformulaearevalidforconcretescuredforatleastsentedapredictionmodelforconcretestructuresofhighoneday.Formulaepredictingmodelparametersfromthesensitivitytotheeffectsofcreepandshrinkage,asdefinedcomposationofconc
8、retehavenotbeendevelopedforspe-bythecategorisationofvarioustypesofstructuresinthatcialconcretescontainingvariousadmixtures,pozzolans,recommendationandinAppendix5.Forstructuresofmicrosilica,andfibers.However,ifthemodelparam
