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ANSI/ADA Specification39-2006 窝沟封闭剂

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【英文标准名称】:PitandFissureSealants
【原文标准名称】:窝沟封闭剂
【标准号】:ANSI/ADASpecification39-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Dental;Dentalmaterials;Dentistry;Fissures;Materials;Pits;Resins;Sealants
【摘要】:
【中国标准分类号】:C33
【国际标准分类号】:11_060_10
【页数】:
【正文语种】:英语


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【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】:Smallcraft-Hullconstructionandscantlings-Designpressuresformonohulls,designstresses,scantlingsdetermination
【原文标准名称】:小型船.船体构造和船材尺寸.单体船的设计压力,设计应力和船材尺寸的测定
【标准号】:BSENISO12215-5-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-05-30
【实施或试行日期】:2008-05-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:设计计算;尺寸选定;尺寸;草图;船体;压力;船材尺寸;造船;小型船;规范(验收);应力;结构体系;测试;船舶;电压测量
【英文主题词】:Designcalculations;Dimensioning;Dimensions;Draft;Hulls;Pressure;Scantlings;Shipbuilding;Smallcraft;Specification(approval);Stress;Structuralsystems;Testing;Vessels;Voltagemeasuring
【摘要】:ISO12215-5:2008appliestothedeterminationofdesignpressuresandstresses,andtothedeterminationofthescantlings,includinginternalstructuralmembersofmonohullsmallcraftconstructedfromfibrereinforcedplastics,aluminiumorsteelalloys,gluedwoodorothersuitableboatbuildingmaterial,withalengthofhullinaccordancewithISO8666,between2,5mand24m.Itonlyappliestoboatsintheintactconditionandtocraftwithamaximumspeedequaltoorlessthan50knotsinfullyloaded,readyforuseconditions.
【中国标准分类号】:U18
【国际标准分类号】:47_020_10;47_080
【页数】:118P;A4
【正文语种】:英语