【英文标准名称】:StandardTestMethodforSeparationofAsphaltintoFourFractions
【原文标准名称】:沥青分离为四种馏分的标准试验方法
【标准号】:ASTMD4124-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D04.47
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aromatics;asphaltenes;napthene;petrolenes(maltenes);polararomatics;saturates;Asphaltenes;Asphalts;Compositionanalysis--pavingmaterials;Insolublemattercontent;Lubricatingoils;Naphthaandnaphthaderivatives;nC7-asphaltenes;Pe
【摘要】:Thistestmethodseparatesasphaltsintofourwell-definedfractions.Analysisofthesefractionscanbeusedtoevaluateasphaltcomposition(1,2).Forexample,onecancomparetheratiosofthefractionswithotherasphaltsystemstoevaluateprocessingandagingparametersthatrelatetoperformancepropertiesoftheasphalt.1.1Thistestmethodcoverstheseparationoffourdefinedfractionsfrompetroleumasphalts.Thefourfractionsaredefinedassaturates,naphthenearomatics,polararomatics,andiso-octaneinsolubleasphaltenes.Thismethodcanalsobeusedtoisolatesaturates,naphthenearomatics,andpolararomaticsfromdistillateproductssuchasvacuumgasoils,lubricatingoils,andcyclestocks.Thesedistillateproductsusuallydonotcontainasphaltenes.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8.1.4Sinceaprecisionestimateforthisstandardhasnotbeendeveloped,thistestmethodistobeusedforresearchorinformationalpurposesonly.Therefore,thisstandardshouldnotbeusedforacceptanceorrejectionofamaterialforpurchasingpurposes.
【中国标准分类号】:E43
【国际标准分类号】:
【页数】:8P.;A4
【正文语种】:英语


【英文标准名称】:Wideningtestonnuts
【原文标准名称】:螺母的加宽试验
【标准号】:BSISO10484-1997
【标准状态】:作废
【国别】:英国
【发布日期】:1997-12-15
【实施或试行日期】:1997-12-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:优先尺寸;表面性质;螺母;材料的机械性能;表面缺陷;螺纹紧固件;扭矩;内螺纹紧固件;宽度测量;直径;机械试验
【英文主题词】:diameter;widthmeasurement;torque;threadedfasteners;surfacedefects;mechanicaltesting;nuts;mechanicalpropertiesofmaterials;surfaceproperties;preferredsizes;internal-threadfasteners
【摘要】:ThisInternationalStandardspecifiesthetestprocedureforevaluatingtheacceptabilityofsurfacediscontinuitiesdesignatedinISO6157-2excludingnutsmadeoffreecuttingsteel.Itappliestonutswith-propertyclassestoISO898-2andISO898-6;-nominalthreaddiameter,d,from5mmuptoandincluding39mm;-productgradesAandB.
【中国标准分类号】:J13
【国际标准分类号】:21_060_20
【页数】:8P.;A4
【正文语种】:英语