ASTM C684-1999(2003) 混凝土压力试样的制作、快速养护和测试的标准试验方法
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【英文标准名称】:StandardTestMethodforMaking,AcceleratedCuring,andTestingConcreteCompressionTestSpecimens
【原文标准名称】:混凝土压力试样的制作、快速养护和测试的标准试验方法
【标准号】:ASTMC684-1999(2003)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:C09.61
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:发电;压力;施工材料;混凝土;试验;建筑;保用期服务;试样
【英文主题词】:acceleratedcuring;compressivestrength;testing
【摘要】:Theacceleratedcuringproceduresprovide,attheearliestpracticaltime,anindicationofthepotentialstrengthofaspecificconcretemixture.Theseproceduresalsoprovideinformationonthevariabilityoftheproductionprocessforuseinqualitycontrol.Theacceleratedearlystrengthobtainedfromanyoftheproceduresinthistestmethodcanbeusedtoevaluateconcretestrengthsinthesamewayconventional28-daystrengthshavebeenusedinthepast,withsuitablechangesintheexpectedstrengthvalues.Sincethepracticeofusingstrengthvaluesobtainedfromstandard-curedcylindersat28daysislongestablishedandwidespread,theresultsofacceleratedstrengthtestsareoftenusedtoestimatethelater-agestrengthunderstandardcuring.Suchestimatesshouldbelimitedtoconcretesusingthesamematerialsandmixtureproportionsasthoseusedforestablishingthecorrelation.AppendixX2providesaproceduretoestimatethe90%confidenceintervaloftheaveragelater-agestrengthbasedonacceleratedstrengthtestresults.Correlationbetweenacceleratedstrengthandstrengthachievedatsomelateragebyusingconventionalcuringmethodsdependsuponthematerialscomprisingtheconcrete,themixtureproportions,andthespecificacceleratedtestprocedure.Theusershallchoosewhichproceduretouseonthebasisofexperienceandlocalconditions.Theseprocedures,ingeneral,willbepracticalwhenafieldlaboratoryisavailabletohousethecuringcontainersandthetestingequipmenttomeasurecompressivestrengthwithinthespecifiedtimelimits.1.1Thistestmethodcoversfourproceduresformaking,curing,andtestingspecimensofconcretestoredunderconditionsintendedtoacceleratethedevelopmentofstrength.Thefourproceduresare:ProcedureA-WarmWaterMethod,ProcedureB-BoilingWaterMethod,ProcedureC-AutogenousCuringMethod,andProcedureD-HighTemperatureandPressureMethod.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SeeSection9andNote9and14forspecificwarningsandprecautions.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:10P.;A4
【正文语种】:
【英文标准名称】:StandardPracticeforCleaningandMaintainingControlledAreasandCleanRooms
【原文标准名称】:可控区域和清洁室的清洁和维护的标准实施规程
【标准号】:ASTME2042-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E21.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:清洁处理;空气质量;清洁器;维修;无菌室;航空航天运输
【英文主题词】:cleaning;cleanrooms;controlledareas;maintenance
【摘要】:ThispracticeidentifiesmethodsforcleaningandmaintainingcontrolledareasandcleanroomsasdefinedbyISO14644-1andISO14644-2.Cleaningproceduresaredescribed,andcleaningfrequencyfordifferentclassesoffacilityaregiven.Compliancewiththispracticewillmakeiteasierandmorelikelythattherequiredleveloffacilitycleanlinesswillbemaintained.Acleanerfacilityalsowillhelptoprotectflighthardwarefromcontaminationandshouldreducethefrequencyforcleaningflighthardware.Thispracticedoesnotdiscussoperationandoperationalproceduresforcleanroomsandcontrolledareas.OtherdocumentssuchasIEST-RP-CC026andPracticeE2352providerecommendedpracticesforoperatingcleanroomsandcontrolledareas.1.1Thispracticecoverstheprocedurestobefollowedfortheinitialcleaningandnormalmaintenanceofcleanroomsandcontrolledareas.Thispracticeisapplicabletoaerospacecleanareaswherebothparticlesandmolecularfilms(NVR)mustbecontrolled.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z50
【国际标准分类号】:13_040_35
【页数】:8P.;A4
【正文语种】:
【英文标准名称】:Weldedstaticnon-pressurizedthermoplastictanks-Generalprinciples
【原文标准名称】:焊接非静压热塑罐.一般原理
【标准号】:BSEN12573-1-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-11-15
【实施或试行日期】:2000-11-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:聚偏氟乙烯;聚乙烯;热塑性聚合物;固定的;聚丙烯;水箱;焊接接头;散货储藏容器;聚氯乙烯;塑料
【英文主题词】:
【摘要】:Thisstandardspecifiesgeneralprinciplesforweldedstaticnon-pressurizedthermoplastictanks.Itappliestoworkshopandsitefabrications.Thestandardcoverstankswithacapacityof0,45m(450litres)andabove.Tankswhichcomplywiththerequirementsofthisstandardarenotintendedtowithstandinternalpressureorvacuumotherthanthatwhichmayoccurduringthetransferoffluids(includinggases)intheirnormaloperation.Thisstandardappliestotanksfabricatedinthefollowingthermoplastics:Polyethylene(PE)Polypropylene(PP)Poly(vinylchloride)(PVC)Poly(vinylidenefluoride)(PVDF)NOTE:DesigndataforthesematerialsisgiveninEN1778.
【中国标准分类号】:J64
【国际标准分类号】:23_020_10
【页数】:30P;A4
【正文语种】:英语