BS 507-1985 工业用乙醇规范
作者:标准资料网 时间:2024-05-20 03:07:24 浏览:8295
来源:标准资料网
【英文标准名称】:Specificationforethanolforindustrialuse
【原文标准名称】:工业用乙醇规范
【标准号】:BS507-1985
【标准状态】:现行
【国别】:英国
【发布日期】:1985-11-29
【实施或试行日期】:1985-11-29
【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】:酸度;相对密度;溶解度试验方法;颜色;乙醇;可混性;工业的;蒸发残余物测定;强碱性;化学成分;溶剂;重量分析;化学分析和试验
【英文主题词】:Acidity;Alkalinity;Chemicalanalysisandtesting;Chemicalcomposition;Colour;Ethylalcohol;Evaporationresiduedetermination;Gravimetricanalysis;Industrial;Miscibility;Relativedensity;Solubilitytestmethods;Solvents
【摘要】:Colour,strength,residueonevaporation,miscibilitywithwater,alkalinityoracidity,carbonylcompounds,permanganatetime,methanol,sampling.Tablerelatingdensityandstrengthappended.
【中国标准分类号】:G16
【国际标准分类号】:71_080_60
【页数】:8P;A4
【正文语种】:英语
【英文标准名称】:Smallcraft-Steeringgear-Cableandpulleysystems.
【原文标准名称】:小艇.操舵装置.缆索和滑轮系统
【标准号】:NFJ38-099-2004
【标准状态】:现行
【国别】:法国
【发布日期】:2004-08-01
【实施或试行日期】:2004-08-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:水路运输工程部件;设计;安装;控制;航船;小艇;造船;金属丝绳;船舶;控制系统;舵轮;快艇;驾驶控制装置;软轴传动;游艇;装配;小型船舶;定义;规范(验收);风动装置;规范
【英文主题词】:
【摘要】:
【中国标准分类号】:U18
【国际标准分类号】:47_080
【页数】:15P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforAutogenousStrainofCementPasteandMortar
【原文标准名称】:水泥浆和水泥砂浆自应力的标准测试方法
【标准号】:ASTMC1698-2009
【标准状态】:现行
【国别】:
【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】:C09.68
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:autogenousstrain;cementpaste;lengthchange;mortar
【摘要】:Autogenousstrainistheself-createdbulkstrainofcementpaste,mortar,orconcreteduringhardeningatconstanttemperature.Inconventionalconcrete,autogenousshrinkagestrainisgenerallynegligible,butinconcretewithlowwater-cementitiousmaterialsratio(w/cm)orwithsilicafumeitmaybeconsiderable(1).Restraintoftheautogenousstrainbyaggregatesoradjoiningstructuralmembersmayresultinformationofmicroandmacrocracksthatimpairstrength,durabilityandaesthetics.Cracksmayalsobeaproblemwithregardtohygieniccleaningofsurfaces.Anaccuratemeasurementoftheautogenousstrainofcementitiousmixtureswithloww/cmisimportantforevaluatingtheriskofearly-agecrackingofconcretestructures.Measurementsofautogenousstrainhavebeencarriedoutusingeithervolumetricorlinearmethods.Bothmethodsmayshowevidenceofsignificantartifacts(1);therefore,resultsofthetwomethodsmaydisagreeconsiderablyifnotcarriedoutproperly.Asealed,flexiblecorrugatedmoldsystem(2)combinestheadvantagesoflinearandvolumetricmeasurementofautogenousstrain,whileavoidingmostoftheirdisadvantages.Themoldeffectivelypreventsmoisturelossandminimizesrestrainttovolumechangeduringhardening.Moreover,resultsobtainedwiththecorrugatedmoldsystemagreewiththosefromthevolumetricmethod,oncesomeartifacts,inparticularwaterabsorptionthroughthemembraneusedtocontainthetestspecimen,havebeeneliminatedinthelatter(3,4).Thecorrugatedmoldsystemiseasiertouseandshowsbetterrepeatabilitythanthevolumetrictechnique(3,4).MeasurementswiththecorrugatedmoldsystemareingoodagreementwithunrestrainedlengthchangemeasurementsobtainedusingTestMethodC157/C157Mwithsealedspecimens(5);however,TestMethodC157/C157Mdoesnotallowmeasurementoftheshrinkageoccurringbefore24h(5).Thistestmethodcanbeusedtoevaluatetheeffectsofcementitiousmaterials,admixtures,andmixtureproportionsonautogenousshrinkagestrainofpasteormortarspecimens.Theautogenousshrinkagestrainofmortarspecimenswillbelessthanthatofpastespecimensforthesamew/cm.Theautogenousshrinkagestrainofconcretewillbelessthanthatofmortarforthesamew/cm.Thenominalmaximumaggregatesizeformortarusedinthistestmethodis4.75mm.1.1Thistestmethodmeasuresthebulkstrainofasealedcementpasteormortarspecimen,includingthosecontainingadmixtures,varioussupplementarycementitiousmaterials(SCM),andotherfinematerials,atconstanttemperatureandnotsubjectedtoexternalforces,fromthetimeoffinalsettinguntilaspecifiedage.Thisstrainisknownasautogenousstrain.Autogenousstrainismostsignificantinconcretewithlowwater-cementitiousmaterialsratio(w/cm)(SeeNote1).Note18212;Alowwater-cementitiousmaterialsratio(w/cm)canbeconsideredtobeawatertocementratioof0.40orlowerforthistest.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthe......
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:8P.;A4
【正文语种】:
