【英文标准名称】:StandardTestMethodsfortheDeterminationoftheModulusandDampingPropertiesofSoilsUsingtheCyclicTriaxialApparatus
【原文标准名称】:用循环三轴器测定土壤的阻尼特性和模数的标准试验方法
【标准号】:ASTMD3999-1991(2003)
【标准状态】:现行
【国别】:
【发布日期】:1991
【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】:D18.09
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:土壤学;潮气;试验
【英文主题词】:damping;laboratorytest;physicalproperties;triaxialstress
【摘要】:Thecyclictriaxialmodulusanddampingtestprovidesparametersthatmaybeconsideredforuseindynamic,linearandnon-linearanalyticalmethods.Thesetestmethodsareusedfortheperformanceevaluationofbothnaturalandengineeredstructuresunderdynamicofcyclicloadssuchascausedbyearthquakes,oceanwave,orblast.OneoftheprimarypurposesofthesetestmethodsistoobtaindatathatareusedtocalculateYoungrsquo;modulus.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.DESIG:D399991(Reapproved2003)^TITLE:StandardTestMethodsfortheDeterminationoftheModulusandDampingPropertiesofSoilsUsingtheCyclicTriaxialApparatus^SCOPE:1.Scope1.1Thesetestmethodscoverthedeterminationofthemodulusanddampingpropertiesofsoilsineitherundisturbedorreconstitutedstatesbyeitherloadorstrokecontrolledcyclictriaxialtechniques.1.2Thecyclictriaxialpropertiesofsoilareevaluatedrelativetoanumberoffactorsincluding:strainlevel,density,numberofcycles,materialtype,saturation,andeffectivestress.1.3Thesetestmethodsareapplicabletobothfine-grainedandcoarse-grainedsoilsasdefinedbytheunifiedsoilclassificationsystemorbyClassificationD2487.Testspecimensmaybeundisturbedorreconstitutedbycompactioninthelaboratory.1.4TwotestmethodsareprovidedforusingacyclicloadertodetermineYoung''smodulus(E)anddamping(D)properties.Thefirsttestmethod(A)permitsthedeterminationofEandDusingaconstantloadapparatus.Thesecondtestmethod(B)permitsthedeterminationofEandDusingaconstantstrokeapparatus.Thetestmethodsareasfollows:1.4.1TestMethodAThistestmethodrequirestheapplicationofaconstantcyclicloadtothetestspecimen.ItisusedfordeterminingtheYoung''smodulusanddampingunderaconstantloadcondition.1.4.2TestMethodBThistestmethodrequirestheapplicationofaconstantcyclicdeformationtothetestspecimen.ItisusedfordeterminingtheYoung''smodulusanddampingunderaconstantstrokecondition.1.5Thedevelopmentofrelationshipstoaidininterpretingandevaluatingtestresultsarelefttotheengineerorofficerequestingthetest.1.6LimitationsTherearecertainlimitationsinherentinusingcyclictriaxialteststosimulatethestressandstrainconditionsofasoilelementinthefieldduringanearthquake.1.6.1Nonuniformstressconditionswithinthetestspecimenareimposedbythespecimenendplatens.1.6.2A90changeinthedirectionofthemajorprincipalstressoccursduringthetwohalvesoftheloadingcycleonisotropicallyconfinedspecimensandatcertainlevelsofcyclicstressapplicationonanisotropicallyconfinedspecimens.1.6.3Themaximumcyclicaxialstressthatcanbeappliedtoasaturatedspecimeniscontrolledbythestressconditionsattheendofconfiningstressapplicationandthepore-waterpressuresgeneratedduringtesting.Foranisotropicallyconfinedspecimentestedincycliccompression,themaximumcyclicaxialstressthatcanbeappliedtothespecimenisequaltotheeffectiveconfiningpressure.Sincecohe......
【中国标准分类号】:Z13
【国际标准分类号】:
【页数】:15P.;A4
【正文语种】:
基本信息
标准名称: | 出口芳香油、单离和合成香料黄樟油中黄樟油素含量测定法 |
英文名称: | Essential oils perfumery isolates and synthetics for export—Determination of safrole content in sassafras oil |
中标分类: |
轻工、文化与生活用品 >>
日用化工品 >>
日用化工品综合 |
替代情况: | ZB Y40012-86 |
发布部门: | 中华人民共和国国家进出口商品检验局 |
发布日期: | 1997-12-22 |
实施日期: | 1998-05-01 |
首发日期: | |
作废日期: | |
主管部门: | 中华人民共和国国家进出口商品检验局 |
提出单位: | 中华人民共和国国家进出口商品检验局 |
归口单位: | 中华人民共和国国家进出口商品检验局 |
起草单位: | 中华人民共和国上海进出口商品检验局 |
起草人: | 杨勇、李晓琪 |
出版日期: | 1998-05-01 |
页数: | 5页 |
适用范围
本标准规定了出口黄樟油中黄樟油素含量的测定方法。
本标准适用于出口黄樟油中黄樟油素含量的测定。
前言
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目录
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引用标准
GB /T 14454.1-93 香料试样制备
GB /T 14455.2 -93 精油取样方法
所属分类: 轻工 文化与生活用品 日用化工品 日用化工品综合