ASTM D4186-2006 用可控应变荷载测试饱和粘性土单维固结性能的标准试验方法

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【英文标准名称】:StandardTestMethodforOne-DimensionalConsolidationPropertiesofSaturatedCohesiveSoilsUsingControlled-StrainLoading
【原文标准名称】:用可控应变荷载测试饱和粘性土单维固结性能的标准试验方法
【标准号】:ASTMD4186-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D18.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:固结试验(土壤);固结性;建筑;施工材料;特性;土壤;试验
【英文主题词】:compressibility;compressibilitycoefficient;CRS;consolidationcoefficient;consolidationtest;consolidometer;hydraulicconductivity;preconsolidationstress;settlement
【摘要】:1.1Thistestmethodisforthedeterminationofthemagnitudeandrate-of-consolidationofsaturatedcohesivesoilsusingcontinuouscontrolled-strainaxialcompression.Thespecimenisrestrainedlaterallyanddrainedaxiallytoonesurface.Theaxialforceandbaseexcesspressurearemeasuredduringthedeformationprocess.Controlledstraincompressionistypicallyreferredtoasconstantrate-of-strain(CRS)testing.1.2Thistestmethodprovidesforthecalculationoftotalandeffectiveaxialstresses,andaxialstrainfromthemeasurementofaxialforce,axialdeformation,andbaseexcesspressure.Theeffectivestressiscomputedusingsteadystateequations.1.3Thistestmethodprovidesforthecalculationofthecoefficientofconsolidationandthehydraulicconductivitythroughouttheloadingprocess.Thesevaluesarealsobasedonsteadystateequations.1.4Thistestmethodmakesuseofsteadystateequationsresultingfromatheoryformulatedunderparticularassumptions.Sectionpresentstheseassumptions.1.5ThebehaviorofcohesivesoilsisstrainratedependentandhencetheresultsofaCRStestaresensitivetotheimposedrateofstrain.Thistestmethodimposeslimitsonthestrainratetoprovidecomparableresultstotheincrementalconsolidationtest.1.6ThedeterminationoftherateandmagnitudeofconsolidationofsoilwhenitissubjectedtoincrementalloadingiscoveredbyTestMethodD2435.1.7Thistestmethodappliestointact(GroupCandGroupDofPracticeD4220),remolded,orlaboratoryreconstitutedsamplesorspecimens.1.8Thistestmethodismostoftenusedformaterialsofrelativelylowhydraulicconductivitythatgeneratemeasurableexcessbasepressures.Itmaybeusedtomeasurethecompressionbehaviorofessentiallyfreedrainingsoilsbutwillnotprovideameasureofthehydraulicconductivityorcoefficientofconsolidation.1.9AllrecordedandcalculatedvaluesshallconformtotheguideforsignificantdigitsandroundingestablishedinPracticeD6026.1.9.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproceduresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsiderationsfortheusersobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.9.2Measurementsmadetomoresignificantdigitsorbettersensitivitythanspecifiedinthisstandardshallnotberegardedanon-conformancewiththisstandard.1.10ThisstandardiswrittenusingSIunits.Inch-poundunitsareprovidedforconvenience.Thevaluesstatedininch-poundunitsmaynotbeexactequivalents;therefore,theyshallbeusedindependentlyoftheSIsystem.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththethisstandard.1.10.1Thegravitationalsystemofinch-poundunitsisusedwhendealingwithinch-poundunits.Inthissystem,thepound(lbf)representsaunitofforce(weight),whiletheunitformassisslugs.Therationalizedslugunitisnotgiven,unlessdynamic(F=ma)calculationsareinvolved.1.10.2Itiscommonpracticeintheengineering/constructionprofessiontoconcurrentlyusepoundstorepresentbothaunitofmass(lbm)andofforce(lbf).Thisimplicitlycombinestwoseparatesystemsofunits;thatis,theabsolutesystemandthegravitationalsystem.Itisscientificallyundesirabletocombinetheuseoftwoseparatesetsofinch-poundunitswithinasinglestandard.Asstated,thisstandardincludesthegravitat......
【中国标准分类号】:P20
【国际标准分类号】:93_020
【页数】:15P.;A4
【正文语种】:


基本信息
标准名称:半导体集成音响电路图示均衡电路测试方法的基本原理
英文名称:General principles of measuring methods for graphic equalizers of semiconductor audio integrated circuits
中标分类: 化工 >> 化工综合 >> 技术管理
发布日期:1993-09-28
实施日期:1994-01-01
首发日期:1900-01-01
作废日期:2010-01-20
出版日期:1900-01-01
页数:7页
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所属分类: 化工 化工综合 技术管理
【英文标准名称】:Instrumentsforsurgery;scalpelswithdetachableblades;fittingdimensions(ISO7740:1985);germanversionEN27740:1992
【原文标准名称】:外科器械.可更换刀片的手术刀.装配尺寸
【标准号】:EN27740-1992
【标准状态】:现行
【国别】:
【发布日期】:1992-08
【实施或试行日期】:
【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】:外科设备;精密机械;尺寸;仪器;手术器械;手柄;可换的;解剖刀;连接尺寸;医疗设备;刀片;公差(测量);一级配合尺寸;外科学;手柄轴;医学科学
【英文主题词】:Blades;Connectingdimensions;Dimensioninaclassoffits;Dimensions;Exchangeable;Finemechanics;Handleshafts;Handles;Instruments;Medicalequipment;Medicalsciences;Replaceability;Scalpels;Surgery;Surgicalequipment;Surgicalinstruments;Surgicalknives;Tolerances(measurement)
【摘要】:
【中国标准分类号】:C31
【国际标准分类号】:11_040_30
【页数】:4P.;A4
【正文语种】:英语