NF P18-430-2001 硬化混凝土试验.第1部分:样品和模型的形状、尺寸和其它要求
时间:2024-05-16 16:47:25 来源: 标准资料网 作者：标准资料网 阅读：9140
【英文标准名称】:Testinghardenedconcrete-Part1:shape,dimensionsandotherrequirementsfortestspecimensandmoulds.
【原文标准名称】:硬化混凝土试验.第1部分:样品和模型的形状、尺寸和其它要求
【标准号】:NFP18-430-2001
【标准状态】:作废
【国别】:法国
【发布日期】:2001-10-01
【实施或试行日期】:2001-10-20
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Calibration;Concretestructures;Concretes;Consistency(mechanicalproperty);Construction;Constructionmaterials;Definition;Definitions;Deviations;Dimensions;Evaluations;Freshconcrete;Materialtestingmachines;Measurement;Measuringinstruments;Mechanicaltesting;Nominalsize;Precision;Prisms(optical);Production;Properties;Samplingmethods;Shape;Solidconcrete;Specification(approval);Specimenpreparation;Strengthtests;Testequipment;Testspecimens;Testing;Tolerances(measurement)
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:13P.;A4
【正文语种】:其他
Product Code:SAE AS38999/40
Title:Connectors, Electrical, Circular, Miniature, High Density, Quick Disconnect (Bayonet, Threaded and Breech Coupling), Environmental Resistant, Removable Crimp and Hermetic Solder Contacts, Receptacle, Wall Mounting Flange, Breech Coupling, R
Issuing Committee:Ae-8c1 Connectors Committee
Scope:No scope available.【英文标准名称】:StandardTestMethodforOn-LineMonitoringofTotalCarbon,InorganicCarboninWaterbyUltraviolet,PersulfateOxidation,andMembraneConductivityDetection
【原文标准名称】:通过紫外线、过硫酸盐氧化作用、膜导电位检测对水中总碳、无机碳在线监测的标准试验方法
【标准号】:ASTMD5997-1996(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:D19.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:carbon;conductivity;inorganiccarbon;membrane;on-line;totalorganiccarbon;Carboncontent--water;Impurities--water;Inorganiccarbon(IC);Membraneconductivitydetection;Onlinemonitoring(inwateranalysis);Organiccarbon(OC);Totalorgan
【摘要】:Thistestmethodisusefulfordetectinganddeterminingorganicandinorganiccarbonimpuritiesinwaterfromavarietyofsourcesincludingindustrialwater,drinkingwater,andwastewater.Measurementoftheseimpuritiesisofvitalimportancetotheoperationofvariousindustriessuchaspower,pharmaceutical,semiconductor,drinkingwatertreatment,andwastetreatment.Semiconductorandpowerapplicationsrequiremeasurementofveryloworganiccarbonlevels(TOCx003C;1x03BC;g/L).ApplicationsinpharmaceuticalindustriesrangefromUSPpurifiedwater(TOCx003C;500x03BC;g/L)tocleaningapplications(500x03BC;g/Lx003C;TOCx003C;50000x03BC;g/L).Drinkingwatersrangefromx003C;100x03BC;g/Lto25000x03BC;g/Landhigher.Someoftheseapplicationsmayincludewaterswithsubstantialionicimpuritiesaswellasorganicmatter.Measurementofinorganiccarbonaswellastotalorganiccarbonishighlyimportanttosomeapplications,suchasinthepowerindustry.Continuousmonitoringandobservationoftrendsinthesemeasurementsareofinterestinindicatingtheneedforequipmentadjustmentorcorrectionofwaterpurificationprocedures.RefertoAnnexA1foradditionalinformationregardingthesignificanceofthistestmethod.1.1Thistestmethodcoverstheon-linedeterminationoftotalcarbon(TC),inorganiccarbon(IC),andtotalorganiccarbon(TOC)inwaterintherangefrom0.5x03BC;g/Lto50000x03BC;g/Lofcarbon.Highercarbonlevelsmaybedeterminedbysuitableon-linedilution.Thistestmethodutilizesultraviolet-persulfateoxidationoforganiccarboncoupledwithaCO2selectivemembranetorecovertheCO2intodeionizedwater.Thechangeinconductivityofthedeionizedwaterismeasuredandrelatedtocarbonconcentrationintheoxidizedsampleusingcalibrationdata.Inorganiccarbonisdeterminedinasimilarmannerwithouttherequirementforoxidation.Inbothcases,thesampleisacidifiedtofacilitateCO2recoverythroughthemembrane.TherelationshipbetweentheconductivitymeasurementandcarbonconcentrationcanbedescribedbyasetofchemometricequationsforthechemicalequilibriumofCO2,HCO3x2212;,H+,andOHx2212;,andtherelationshipbetweentheionicconcentrationsandtheconductivity.ThechemometricmodelincludesthetemperaturedependenceoftheequilibriumconstantsandthespecificconductancesresultinginlinearresponseofthemethodoverthestatedrangeofTOC.SeeTestMethodD4519foradiscussionofthemeasurementofCO2byconductivity.1.2Thistestmethodhastheadvantageofaveryhighsensitivitydetectorthatallowsverylowdetectionlevelsonrelativelysmallvolumesofsample.Also,theuseoftwomeasurementchannelsallowsdeterminationofICinthesampleindependentlyoforganiccarbon.IsolationoftheconductivitydetectorfromthesamplebytheCO2selectivemembraneresultsinaverystablecalibrationwithminimalinterferences.1.3Thistestmethodwasusedsuccessfullywithreagentwaterspikedwithsodiumcarbonateandvariousorganiccompounds.This......
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:7P.;A4
【正文语种】:英语