ISO/TR 15655-2003 防火.高温下对防火工程设计用结构材料的热物理和机械特性的试验

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【英文标准名称】:Fireresistance-Testsforthermo-physicalandmechanicalpropertiesofstructuralmaterialsatelevatedtemperaturesforfireengineeringdesign
【原文标准名称】:防火.高温下对防火工程设计用结构材料的热物理和机械特性的试验
【标准号】:ISO/TR15655-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-04
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC92
【标准类型】:()
【标准水平】:()
【中文主题词】:热性能;木材;燃烧试验;耐火性;机械性能;混凝土;防火安全;金属;高温试验;施工材料;砖石工程;防火;塑料
【英文主题词】:firesafety;thermalproperties;high-temperaturetesting;masonry;mechanicalproperties;firetests;constructionmaterials;fireresistance;wood;concretes;metals;plastics;fireprotection
【摘要】:ThisTechnicalReportidentifiestestmethodsalreadyinexistenceandprovidesguidanceonthosethatneedtobedevelopedtocharacterizethethermo-physicalandmechanicalpropertiesofstructuralmaterialsatelevatedtemperaturesforuseinfiresafetyengineeringcalculations.Itisapplicabletomaterialsusedinload-bearingconstructioninwhichstructuralandthermalcalculationsmightberequiredtoassesstheperformanceofelementsorsystemsexposedtoeitherstandardfiretests,realordesignfireheatingconditions.Itisrecognizedthattheelevatedtemperaturepropertiesofmaterialscanbedeterminedunderavarietyofconditions.Sincefireisarelativelyshorttransientprocesslastingfromafewminutestoseveralhours,ideally,thepropertiesdeterminedshouldreflectthetransientthermalandloadingconditionsaswellasthedurationofheatingthatmaybeexperiencedinpractice.However,itisalsorecognizedthatsomepropertiesarerelativelyinsensitivetothetransientconditionsandtherefore,alternativesteadystatetestmethodsmaybeappropriate.Somepropertiesaresensitivetoorientationeffects,forexampletimber,andtheseshouldbeconsideredwithrespecttohowthetestsareconducted.Incaseswherematerialsundergoeitherachemicaloraphysicalreactionduringtheheatingprocess,itmightbeimpossibletodetermineanindividualproperty.ThisTechnicalReportgivesguidanceinselectingatestmethodtodetermineaneffectivevaluerepresentingacombinationofproperties.Itisalsorecognizedthatatestspecimenmaybecomprisedofasmallconstructionsuchasthatusedinthetestingofmasonry.Thisofteninvolvesbuildingaminiassemblytoformapyramidinordertorepresentthetruebehaviour.Apartfromthetraditionalconstructionmaterialssuchasmetals,concrete,masonryandwood,theuseofplasticsandfibrereinforcementisbecomingmorecommon.ThereforethesematerialshavealsobeenincludedinthisTechnicalReporttoreflectpossiblefuturechangesindesignandadvancesinmaterialstechnology.Inthepast,thebehaviourofjointingsystemsinfirehasonlyreceivedalittleinterestyettheirbehaviourisfundamentaltotheperformanceofcompositeelementsandstructuralframes.ThisTechnicalReportalsoaddressesjointingsystemsunderindividualmaterials,forexampleweldsforsteel,gluesfortimber.However,inmanycases,theenduseofanadhesiveisnotclearoritcoversarangeofapplications.Forthisreasonaseparatecategoryforadhesivesisincluded.Forsomematerials,ithasnotbeenpossibletoidentifyanexistingstandardorlaboratoryprocedureforconductingtestsatelevatedtemperaturesundereithersteadystateortransientheatingconditions.Inthesecases,standardsforconductingtestsatambienttemperatureareidentified.Thesemaybeconsideredtoformthebasisfordevelopmentintoatestmethodsuitableatelevatedtemperatures.Baseduponcurrentfiredesignmethodologiesandthosethatarebeginningtoreceiveattention,Table1andTable2summarizetherequirementsandavailabilityoftestmethodsformeasuringthethermalandmechanicalpropertiesconsideredtohaveanimmediatepriority.NOTEForcompositeconcreteandsteelstructuresthematerialpropertiesrequiredareaddressedundereachindividualmaterial.
【中国标准分类号】:P16
【国际标准分类号】:13_220_40
【页数】:46P;A4
【正文语种】:英语