SL 144.6-2008 电热恒温水浴锅校验方法
时间:2024-05-06 02:55:23 来源: 标准资料网 作者：标准资料网 阅读：9551
基本信息
| 标准名称： | 电热恒温水浴锅校验方法 |
| 中标分类： |
仪器、仪表 >>
其他仪器仪表 >>
水文与水利仪器 |
| ICS分类： |
数学、自然科学 >>
地质学、气象学、水文学
|
| 替代情况： | 替代SL 144-1995 |
| 发布部门： | 中华人民共和国水利部 |
| 发布日期： | 2008-06-17 |
| 实施日期： | 2008-09-17 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国水利水电出版社 |
| 出版日期： | 2008-09-17 |
| 页数： | 7 |
适用范围
本标准适用实验室电热恒温水浴锅的校验及类似设备的校验。
前言
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目录
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引用标准
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所属分类： 仪器 仪表 其他仪器仪表 水文与水利仪器 数学 自然科学 地质学 气象学 水文学
【英文标准名称】:StandardTestMethodforObtainingandTestingDrilledCoresandSawedBeamsofConcrete
【原文标准名称】:混凝土钻芯样和截梁样获取和测试的标准试验方法
【标准号】:ASTMC42/C42M-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:C09.61
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compressivestrength;concretecoring;concretesawing;concretestrength;flexuralstrength;splittingtensilestrength;Tensileproperties/testing--concrete;Changeinlength;Compressiontesting--cement/concrete;Concretecores;Concretetestspeci
【摘要】:Thistestmethodprovidesstandardizedproceduresforobtainingandtestingspecimenstodeterminethecompressive,splittingtensile,andflexuralstrengthofin-placeconcrete.Generally,testspecimensareobtainedwhendoubtexistsaboutthein-placeconcretequalitydueeithertolowstrengthtestresultsduringconstructionorsignsofdistressinthestructure.Anotheruseofthismethodistoprovidestrengthinformationonolderstructures.Concretestrengthisaffectedbythelocationoftheconcreteinastructuralelement,withtheconcreteatthebottomtendingtobestrongerthantheconcreteatthetop.Corestrengthisalsoaffectedbycoreorientationrelativetothehorizontalplaneoftheconcreteasplaced,withstrengthtendingtobelowerwhenmeasuredparalleltothehorizontalplane.Thesefactorsshallbeconsideredinplanningthelocationsforobtainingconcretesamplesandincomparingstrengthtestresults.Thestrengthofconcretemeasuredbytestsofcoresisaffectedbytheamountanddistributionofmoistureinthespecimenatthetimeoftest.Thereisnostandardproceduretoconditionaspecimenthatwillensurethat,atthetimeoftest,itwillbeintheidenticalmoistureconditionasconcreteinthestructure.Themoistureconditioningproceduresinthistestmethodareintendedtoprovidereproduciblemoistureconditionsthatminimizewithin-laboratoryandbetween-laboratoryvariationsandtoreducetheeffectsofmoistureintroducedduringspecimenpreparation.Thereisnouniversalrelationshipbetweenthecompressivestrengthofacoreandthecorrespondingcompressivestrengthofstandard-curedmoldedcylinders.Therelationshipisaffectedbymanyfactorssuchasthestrengthleveloftheconcrete,thein-placetemperatureandmoisturehistory,andthestrengthgaincharacteristicsoftheconcrete.Historically,ithasbeenassumedthatcorestrengthsaregenerally85%ofthecorrespondingstandard-curedcylinderstrengths,butthisisnotapplicabletoallsituations.Theacceptancecriteriaforcorestrengtharetobeestablishedbythespecifierofthetests.ACI318providescorestrengthacceptancecriteriafornewconstruction.1.1Thistestmethodcoversobtaining,preparing,andtestingcoresdrilledfromconcreteforlengthorcompressivestrengthorsplittingtensilestrengthdeterminations.Note18212;AppendixX1providesrecommendationsforobtainingandtestingsawedbeamsforflexuralperformance.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thetextofthisstandardreferencesnotesandfootnotesthatprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q14
【国际标准分类号】:91_100_30
【页数】:6P.;A4
【正文语种】:英语
【英文标准名称】:Bolts,normalbihexagonalhead,normalshank,shortormediumlengthMJthreads,metallicmaterial,coatedoruncoated,strengthclasseslessthanorequalto1100MPa-Dimensions
【原文标准名称】:强度等级小于或等于1100MPa的有涂层或无涂层短长度或中长度MJ螺纹的由金属材料制成的标称12角螺栓头标称杆螺栓.尺寸
【标准号】:BSA303-1994
【标准状态】:作废
【国别】:英国
【发布日期】:1994-08-15
【实施或试行日期】:1994-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;飞行器部件;螺纹;优先尺寸;直径;螺栓;外螺纹紧固件;材料强度;紧固件;螺纹紧固件;MJ螺纹;12角螺栓头
【英文主题词】:Aerospacetransport;Airtransport;Aircraft;Aircraftcomponents;Bihexagonalheads;Bihexagonalscrews;Bolts;Dimensionaltolerances;Dimensions;Fasteners;Industries;Marking;Materials;Screws(bolts);Spacetransport;Surfacetreatment;Surfaces
【摘要】:ThisInternationalStandardspecifiesthedimensionsofnormalbihexagonalheadbolts,withcloseorlargetolerancenormalshank,andshortormediumlengthMJthreads,inmetallicmaterial,coatedoruncoated,withstrengthclasseslessthanorequalto1100MPa.Itisintendedforthedrawingupofaerospaceproductstandards.
【中国标准分类号】:J13
【国际标准分类号】:49_030_20
【页数】:8P;A4
【正文语种】:英语