【英文标准名称】:StandardTestMethodsforBreakingLoadandFlexuralPropertiesofBlock-TypeThermalInsulation
【原文标准名称】:块型绝热材料的破坏载荷和弯曲性的标准试验方法
【标准号】:ASTMC203-2005a
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C16.32
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:极限特性;隔热;试验;特性;建筑;抗弯强度
【英文主题词】:breakingload;breakingstrength;flexuralstrength;modulusofelasticity;modulusofrupture
【摘要】:1.1Thesetestmethodscoverthedeterminationofthebreakingloadandcalculatedflexuralstrengthofarectangularcrosssectionofapreformedblock-typethermalinsulationtestedasasimplebeam.Itisalsoapplicabletocellularplastics.Twotestmethodsaredescribedasfollows:1.1.1TestMethodI8212;Aloadingsystemutilizingcenterloadingonasimplysupportedbeam,supportedatbothends.1.1.2TestMethodII8212;Aloadingsystemutilizingtwosymmetricloadpointsequallyspacedfromtheiradjacentsupportpointsateachendwithadistancebetweenloadpointsofonehalfofthesupportspan.1.2Eithertestmethodiscapableofbeingusedwiththefourproceduresthatfollow:1.2.1ProcedureA8212;Designedprincipallyformaterialsthatbreakatcomparativelysmalldeflections.1.2.2ProcedureB8212;Designedparticularlyforthosematerialsthatundergolargedeflectionsduringtesting.1.2.3ProcedureC8212;Designedformeasuringataconstantstressrate,usingaCRL(constantrateofloading)machine.Usedforbreakingloadmeasurementsonly.1.2.4ProcedureD8212;Designedformeasurementsataconstantcrossheadspeed,usingeitheraCRT(constantrateoftraverse)orCRE(constantrateofextension)machine.Usedforbreakingloadmeasurementsusingafixedcrossheadspeedmachine.1.3Comparativetestsarecapableofbeingrunaccordingtoeithermethodorprocedure,providedthatthemethodorprocedureisfoundsatisfactoryforthematerialbeingtested.1.4Thesetestmethodsarepurposelygeneralinordertoaccommodatethewidelyvaryingindustrypractices.Itisimportantthattheuserconsulttheappropriatematerialsspecificationforanyspecificdetailedrequirementsregardingthesetestmethods.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeSection11.
【中国标准分类号】:Q25
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】: