ASTM C1560-2003(2009) 玻璃纤维增强水泥基复合物的热水加速老化用标准试验方法

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【英文标准名称】:StandardTestMethodforHotWaterAcceleratedAgingofGlass-FiberReinforcedCement-BasedComposites
【原文标准名称】:玻璃纤维增强水泥基复合物的热水加速老化用标准试验方法
【标准号】:ASTMC1560-2003(2009)
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:C27.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:加速老化;GFRC;玻璃纤维;玻璃纤维增强混凝土;加速老化/测试-复合物;玻璃纤维增强水泥基复合物
【英文主题词】:acceleratedaging;GFRC;glassfiber;glassfiberreinforcedconcrete;Acceleratedaging/testing--composites;Glass-fiber-reinforcedcement-basedcomposites
【摘要】:Thebasisforthistestasanindicatorofthelongtermbehavioroffiberreinforcedcompositesisthatelevatedtemperatureandmoisturecontentacceleratetheformationoftheproductsofhydrationofthecementinthematrix,particularlycalciumhydroxide.Itisknownthattheinteractionoftheseproductsofhydration,particularlycalciumhydroxide,withthefiberscanhaveamajoreffectonthelong-termpropertiesofthecomposites.Theprincipalmechanismthatoccursisthatthecalciumhydroxideformswithinthebundlesoffilamentsthatformtheglassfiberstrand.Thisgraduallybondsthefilamentstogether,whichreducesfilamentpull-out.Thiscausesareductioninthestraincapacityofthecomposite,therebyreducingthestrengthofthecompositeandchangingthecompositefromaductilematerialtoanincreasinglybrittlematerial.Acceleratingtheformationofthehydrationproductsacceleratestheirinteractionwiththefibers,henceacceleratingtheagingofthecomposite.Thedatadevelopedfromthistestareusedbyresearchersandmanufacturerstoevaluatethelong-termperformanceofdifferentmixtures,reinforcements,mixturecomponents,andtoprovidedataforthedevelopmentofdesignproceduresforproductsmadefromthesecomposites.Therecordeddataalsoprovidesscreeninginformationasnewmatricesandreinforcementsaredeveloped.Theusefulnessofthetestasanindicatoroflongtermcompositeperformanceisvalidiftheonlyreactionsthatareacceleratedarethosethatoccurmoreslowlyundernaturalweathering,hotwatercaninduceeffectsinsomecomposites,forinstancethosecontainingacrylicpolymer,thatmaynotoccurinnaturalweathering.Thistestmethodmaynotbeavalidindicatoroflong-termperformanceofsuchcomposites.1.1Thistestmethodprovidesawayofacceleratingtheagingofglassfiberreinforcedcementitiouscompositesinordertodevelopdatathatwillindicatereal-lifenaturalweatheringperformance.1.2ThecouponspreparedforthistestmethodwillbetestedusingTestMethodC947.1.3Thistestmethodcanbeusedtoagecouponsforothertestmethods.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:91_100_30
【页数】:2P.;A4
【正文语种】:


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基本信息
标准名称:组合冲模 方刃口联板
英文名称:Combined dies-Joint plate for square point
中标分类: 农业、林业 >> 农业、林业综合 >> 技术管理
发布日期:1988-03-28
实施日期:1988-12-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:2页
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所属分类: 农业 林业 农业 林业综合 技术管理
【英文标准名称】:Guidelinesforadministrative,medical,andnursingstaffconcernedwiththesafeuseofmedicalelectricalequipmentandmedicalelectricalsystems
【原文标准名称】:管理、医疗、护理人员安全使用医疗电气设备和医疗电气系统用指南
【标准号】:IEC/TR60930-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-09
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC62A
【标准类型】:()
【标准水平】:()
【中文主题词】:危险;定义;电器;电气工程;电气设备;电气安全;危害;健康和安全要求;医疗卫生工作人员;损害健康;维修;作标记;危险点标志;医疗设备;医疗人员;医学科学;医疗技术学;护理;职业安全;办公室管理;人员;安全;健康人员;工作地点;工作场所安全
【英文主题词】:Danger;Definition;Definitions;Electricappliances;Electricalengineering;Electricalequipment;Electricalsafety;Hazards;Healthandsafetyrequirements;Healthservicepersonnel;Injurytohealth;Maintenance;Marking;Markingofpointsofhazard;Medicalequipment;Medicalpersonnel;Medicalsciences;Medicaltechnology;Nursing;Occupationalsafety;Officemanagement;Personnel;Safety;Sanitarypersonnel;Workingplaces;Workplacesafety
【摘要】:ThistechnicalreportisintendedtolessentheRISKtoPATIENTS,OPERATORS,andtheirsurroundingsbyprovidingacodeofsafeapplication.ThisreductionofRISKisinadditiontothatbroughtaboutbytheRISKCONTROLmeasuresincorporatedintheMEDICALELECTRICALEQUIPMENT,theMEDICALELECTRICALSYSTEM,andtheelectricalinstallationinmedicallocations,hereafterreferredtoasMEEQUIPMENT,MESYSTEMandinstallationrespectively.NotallexistingMEEQUIPMENT,MESYSTEMSorinstallationsmeettherequirementsoftherelevantlEGstandards.Fromtimetotime,OPERATORSandRESPONSIBLEORGANIZATIONSwillencounterMEEQUIPMENTandMESYSTEMScomplyingwitholdersafetystandards.However,theguidelinesforsafeapplicationgiveninthistechnicalreportshouldneverthelessbefollowedinsofarasthisispossible.TheguidelinesinthistechnicalreportcanbeusedwithMEEQUIPMENTorMESYSTEMSforthehomehealthcareenvironmentprovidedtheMANUFACTURERhasincludedhomeuseintheINTENDEDUSEortheCLINICALENGINEERINGDEPARTMENThascheckedthattheelectricalinstallationandthephysicalenvironmentwillnotresultinanyunacceptableRISKS.Theseguidelinescanalsobeappliedtoequipmentusedforcompensationoralleviationofdisease,injuryordisability.IftheMEEQUIPMENT,anMESYSTEMortheinstallationdoesnotcomplywiththerelevantIECstandards,theRESPONSIBLEORGANIZATIONshouldconsultwiththeCLINICALENGINEERINGDEPARTMENTortheMANUFACTURERforinstructionsonhowtoachieveanadequatelevelofsafety.
【中国标准分类号】:C47
【国际标准分类号】:11_040_01
【页数】:31P.;A4
【正文语种】:英语