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ID:33345842
大小:2.53 MB
页数:56页
时间:2019-02-25
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1、REPORTBE96-3843/2001:36-2FractureMechanicsBehaviourofConcreteatEarlyAgeKarimHariri11InstitutfürBaustoffe,MassivbauundBrandschutz,TechnischeUniversitätBraunschweigPublishedbyDepartmentofCivil&MiningEngineeringDivisionofStructuralEngineeringISBN91-89580–36–2•2001:36-2•SEoRe
2、portN:FractureMechanicsBehaviourofConcreteat2001:36-2IPACSEarlyAgeImprovedProductionofAdvancedConcreteStructures11AuthorKarimHaririk.hariri@tu-bs.de1AddressIBMB,TUBraunschweig,Germany2Author2Address3Author3Address4Author4AddressoTask/Subtaskn:T3.3/T6.3.1and6.3.2BriteEuRam
3、ContractNo.BRPR-CT97-0437oProjectn:BriteEuRamProposalNo.BE96-3843Projecttitle:IPACS-IMPROVEDPRODUCTIONOFADVANCEDCONCRETESTRUCTURESProjectco-BetongindustriAB,DrMatsEmborgordinator:Partners:BetongindustriABCementaABSelmerASATechnicalUniversityofDelftENELTechnicalUinversityo
4、fLuleåNCCABSkanskaTeknikABTechnicalUniversityofBraunschweigIsmesNorwegianPublicRoadsDirectorateElkemASNorcemASTechnicalUniversityofTrondheimProjectfundedbytheEuropeanCommunityundertheIndustrial&MaterialsTechnologiesProgramme(Brite-EuRamIII)IMPROVEDPRODUCTIONOFADVANCEDCONC
5、RETESTRUCTURES-IPACSBackgroundResearchandpracticalexperienceshowthatthequalityandlifetimeofconcretestructureslargelydependonthecuringconditionsintheconcrete'searlylife,asinadequatecuringleadstomalfunctionandcracking.Amajorsourceofdeleteriouscrackingalreadyintheconstructio
6、nstageistheoccurrenceofstressesinthehardeningconcreteduetorestrainedvolumechangerelatedtohydrationtemperaturesandshrinkagephenomena.Itisthusofutmostimportance,especiallyregardingnewhighperformanceconcrete,thattheproperexecutionconditionsaremaintainedthroughouttheconstruct
7、ionperiodbyavoidingtheprematurecracking.ObjectiveofprojectMaingoalofIPACSistoevaluate,integrateandextendtheexistingknowledgeaboutearlyageconcretecrackpredictioninengineeringpracticeyieldingthefollowingbenefits:•Contractorsanddesignerswillhavenewandmorereliableengineeringi
8、nstrumentsenablingthemtopredictandtooptimisethetechnicaleffectandcostofalternativedesignsandexec
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