DIN ISO 8658-2003 碳质材料测试.未烧结和煅烧焦炭.火焰原子吸收光谱法测定痕量元素
时间:2024-05-20 01:42:03 来源: 标准资料网 作者：标准资料网 阅读：8905
【英文标准名称】:Testingofcarbonaceousmaterials-Greenandcalcinedcoke-Determinationoftraceelementsbyflameatomicabsorptionspectroscopy(ISO8658:1997)
【原文标准名称】:碳质材料测试.未烧结和煅烧焦炭.火焰原子吸收光谱法测定痕量元素
【标准号】:DINISO8658-2003
【标准状态】:现行
【国别】:德国
【发布日期】:2003-03
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电极;原子吸收光谱测定法;碳素材料;铁含量;铅;镁;痕量元素;抽样方法;硅;冶金;碳;化学分析和试验;含量测定;铁;铜;锰;锌含量;钒含量;燃烧原子吸收光谱测定法;焦炭;钙;数学计算;铬;镍;钛;铝
【英文主题词】:
【摘要】:Thedocumentspecifiesamethodforthedeterminationoftraceelementsbyflameatomicabsorptionspectroscopyforgreenandcalcinedcoke.
【中国标准分类号】:H61
【国际标准分类号】:71_100_10
【页数】:11P;A4
【正文语种】:德语
【英文标准名称】:StandardGuideforPetrographicExaminationofAggregatesforConcrete
【原文标准名称】:混凝土用集料的岩相检验的标准指南
【标准号】:ASTMC295-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C09.65
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:aggregate;analysis;composition;crushedrock;crushedstone;examination;ledgerock;manufacturesand;naturalsand;petrography;quarry;Aggregate;Compositionanalysis;Crushedrock/stone;Drilledconcretecores;Ledgerock;Manufacturedsand;Micros
【摘要】:Petrographicexaminationsaremadeforthefollowingpurposes:Todeterminethephysicalandchemicalcharacteristicsofthematerialthatmaybeobservedbypetrographicmethodsandthathaveabearingontheperformanceofthematerialinitsintendeduse.Todescribeandclassifytheconstituentsofthesample,Todeterminetherelativeamountsoftheconstituentsofthesamplethatareessentialforproperevaluationofthesamplewhentheconstituentsdiffersignificantlyinpropertiesthathaveabearingontheperformanceofthematerialinitsintendeduse,andTocomparesamplesofaggregatefromnewsourceswithsamplesofaggregatefromoneormoresources,forwhichtestdataorperformancerecordsareavailable.Thisguidemaybeusedbyapetrographeremployeddirectlybythoseforwhomtheexaminationismade.Theemployershouldtellthepetrographer,inasmuchdetailasnecessary,thepurposesandobjectivesoftheexamination,thekindofinformationneeded,andtheextentofexaminationdesired.Pertinentbackgroundinformation,includingresultsofpriortesting,shouldbemadeavailable.Thepetrographer''sadviceandjudgmentshouldbesoughtregardingtheextentoftheexamination.Thisguidemayformthebasisforestablishingarrangementsbetweenapurchaserofconsultingpetrographicserviceandthepetrographer.Insuchacase,thepurchaserandtheconsultantshouldtogetherdeterminethekind,extent,andobjectivesoftheexaminationandanalysestobemade,andshouldrecordtheiragreementinwriting.Theagreementmaystipulatespecificdeterminationstobemade,observationstobereported,fundstobeobligated,oracombinationoftheseorotherconditions.Petrographicexaminationofaggregateconsideredforuseinhydraulic-cementconcreteisoneaspectoftheevaluationofaggregate,butpetrographicexaminationisalsousedformanyotherpurposes.Petrographicexaminationsprovideidentificationoftypesandvarietiesofrockspresentinpotentialaggregates.However,asnotedabove,identificationofeveryrockandmineralpresentinanaggregatesourceisnotrequired.Thepetrographicexaminationshouldestablishwhethertheaggregatecontainschemicallyunstablemineralssuchassolublesulfates,unstablesulfidesthatmayformsulfuricacidorcreatedistressinconcreteexposedtohightemperaturesduringservice,orvolumetricallyunstablematerialssuchassmectites(formerlyknownasthemontmorillonite-saponitegroupofmineralsorswellingclays).Specificationsmaylimitthequartzcontentofaggregatesforuseinconcretethatmaybesubjecttohightemperature(purposefullyoraccidentally)becauseoftheconversiontobeta-quartzat573x00B0;C(1063x00B0;F),withaccompanyingvolumeincrease.Petrographicexaminationshouldidentifytheportionofeachcoarseaggregatethatiscomposedofweatheredorotherwisealteredparticlesandtheextentofthatweatheringoralteration,whetheritissevere,moderate,orslight,andshoulddeterminetheproportionofeachrocktypeineachcondition.Iftheconcreteinwhichtheaggregatemaybeusedwillbeexposedtofreezingandthawinginacriticallysaturatedcondition,finelyporousandhighlyweatheredorotherwisealteredrocksshouldbeidentifiedbecausetheywillbeespeciallysusceptibletodamagebyfreezingandthawingandwillcausetheaggregateportionoftheconcretetofailinfreezingandthawing.Thiswillultimatelydestroytheconcretebecausesuchaggregatescannotbeprotectedbyadequatelyair-entrainedmortar.Finelyporousaggregatesneartheconcretesurfacearealsolikelytoformpopouts,whichareblemishesonpavementsandwalls.Petrographicexaminationsmayalsobeusedtodeterminetheproportionsofcubic,spherical,ellipsoidal,pyramid........
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:9P.;A4
【正文语种】:英语
【英文标准名称】:Hexagonheadsetscrewswithsmallhexagonandhalfdogpointandflatconepoint
【原文标准名称】:六角头短圆截锥端紧定螺钉
【标准号】:DIN564-1995
【标准状态】:现行
【国别】:德国
【发布日期】:1995-02
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:米制的;规范(批准);ISO米制螺纹;交货条件;紧固件;ISO螺纹;尺寸公差;六角(边)形;验收规范;精整;钢;六角头紧固件;公差(测量);螺钉;螺纹形状;螺纹;六角头螺钉;特性;尺寸;材料
【英文主题词】:
【摘要】:Thedocumentcontainsdimensionalandtechnicalrequirementsofhexagonheadsetscrewswithsmallhexagonandhalfdogpointandflatconepointandspecifiestheirdesignation.
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:6P;A4
【正文语种】:德语