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ASTM D 4990-1994 屋顶和防水屋顶用柏油玻璃油毡

作者:标准资料网 时间:2024-05-16 14:09:58  浏览:9668   来源:标准资料网
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【英文标准名称】:CoalTarGlassFeltUsedinRoofingandWaterproofing
【原文标准名称】:屋顶和防水屋顶用柏油玻璃油毡
【标准号】:ASTMD4990-1994
【标准状态】:作废
【国别】:美国
【发布日期】:1994
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:屋面油毡;玻璃纤维衬料;密封;屋顶层
【英文主题词】:roofcoverings;sealing;roofingfelts;glassfibrequilts
【摘要】:
【中国标准分类号】:Q17
【国际标准分类号】:91_060_20
【页数】:
【正文语种】:英语


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【英文标准名称】:StandardSpecificationforChemicalAdmixturesforUseinProducingFlowingConcrete
【原文标准名称】:流动混凝土生产用化学混合物的标准规范
【标准号】:ASTMC1017/C1017M-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007
【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】:C09.23
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:admixture;concrete;flowingconcrete;plasticizingadmixtures;plasticizingandretardingadmixtures;water-reducingadmixtures;water-reducingandretardingadmixtures
【摘要】:1.1Thisspecificationcoverstwotypesofchemicaladmixturestobeaddedtohydrauliccementconcretemixturesforthepurposeofproducingflowingconcrete.Thetypesareasfollows:1.1.1TypeI-Plasticizing,and1.1.2TypeII-Plasticizingandretarding.1.2Thisspecificationstipulatestestsofachemicaladmixturewithreferenceconcretingmaterialsorwithconcrete-makingmaterialsproposedforspecificwork.Unlessotherwisespecifiedbythepurchaser,thetestsshallbemadeusingreferenceconcretingmaterials.1.3Ifachemicaladmixturehasbeentestedandfoundtocomplywiththeprovisionsofthisspecificationusingreferencematerials,andisbeingconsideredforusewithothermaterialsforspecificwork,additionaltestsforsuchuseareallowedifagreeduponbetweenthepurchaserandthesupplierandareallowedtoconsistofaportionofthetestsdescribedherein.1.4Thisspecificationprovidesforthreelevelsoftesting.1.4.1Level1-Duringtheinitialapprovalstage,proofofcompliancewiththeperformancerequirementsdefinedindemonstratesthattheadmixturemeetstherequirementsofthisspecification.UniformityandequivalencetestsofthesectiononLotUniformityandEquivalenceshallbecarriedouttoprovideresultsagainstwhichlatercomparisonscanbemade.1.4.2Level2-Limitedretestingdescribedinthesectionrelatingtogeneralrequirementsmayberequestedatintervalsbythepurchaser.Proofofcompliancewiththerequirementsofdemonstratescontinuedconformityoftheadmixturewiththerequirementsofthespecification.1.4.3Level3-Foracceptanceofalotorformeasuringuniformitywithinorbetweenlots,whenspecifiedbythepurchaser,theuniformityandequivalencetestsofthesectiononLotUniformityandEquivalenceshallbeused.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesininch-poundunitsshowninparenthesesareprovidedforinformationpurposesonly.Note1-Itisrecommendedthat,wheneverpracticable,testsbemadeusingtheconcrete-makingmaterials(cement,pozzolan,slag,aggregates,air-entrainingadmixture),themixtureproportions,andthebatchingsequenceandotherphysicalconditionsproposedforthespecificwork.Thespecificeffectsproducedbychemicaladmixturesmayvarywiththepropertiesandproportionsoftheotheringredientsoftheconcrete.Note2-Temperaturehasapronouncedeffectontimeofsettingofconcrete.ThismaybeexaggeratedbytheuseofadmixtureTypesIandII.Ifconcretetemperaturestobeexpectedonaparticularjobdiffersignificantlyfromtheconditionssetforthinthisspecification,furthertestingmaybedesirable.Note3-Anunusuallyrapidlossofworkabilitywithtime,sometimestermed"slumploss",canbeexperiencedwiththeseadmixtures.Therateofslumplosswillvarywiththeparticularconcretingmaterialsandproportions,mixingequipmentandprocedures,andtemperaturesexperiencedonanyparticularjob.Atelevatedtemperatures,theslumpmayberetainedforalongerperiodifaTypeIIadmixtureisused.Note4-Admixturesthatcontainrelativelylargeamountsofchloridemayacceleratecorrosionofprestressingsteel.Compliancewiththerequirementsofthisspecificationdoesnotconstituteassuranceofacceptabilityoftheadmixtureforuseinprestressedconcrete(seeACI318).Note5-Admixturesthatcontainrelativelylargeamountsofalkali(Na2O+0.658K2O)maycontributetoreactionwithsomeaggregates.Compliancewiththerequirementsofthisspecificationdoesnotassureacceptabilitywhenusedwithalkali-reactiveaggregatesandsomecements.1.6Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shall......
【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】:Householdandsimilarelectricalappliances-Safety-Part2-96:Particularrequirementsforflexiblesheetheatingelements(IEC60335-2-96:2002+A1:2003);GermanversionEN60335-2-96:2002+A1:2004
【原文标准名称】:家用和类似用途电器.安全.第2-96部分:软板式加热元件的特殊要求
【标准号】:EN60335-2-96-2004
【标准状态】:现行
【国别】:
【发布日期】:2004-07
【实施或试行日期】:2004-07-01
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电气器具;防电击;安全;规范(验收);定义;安全要求;电气导电表类型;房间加热设施;家用电器;家用;说明书;加热元件;房间加热器;散热器;电气工程;家用的;加热条;家用设备
【英文主题词】:Definition;Definitions;Domestic;Electricappliances;Electricconductive-sheet-typeheatingelements;Electrichouseholdappliances;Electricalengineering;Firebars;Heatingelements;Householdequipment;Householduse;Incription;Instructions;Protectionagainstelectricshocks;Radiators;Roomheaters;Roomheatingappliances;Safety;Safetyrequirements;Specification(approval)
【摘要】:
【中国标准分类号】:Y63
【国际标准分类号】:97_100_10
【页数】:45P.;A4
【正文语种】:英语



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