MIL-STD-281A (NOTICE 3)
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来源:标准资料网
MIL-STD-281A (NOTICE 3), MILITARY STANDARD: AUTOMOBILES, TRUCKS, TRUCK-TRACTORS, TRAILERS AND TRAILER DOLLIES; PRESERVATION AND PACKAGING OF (29 JUL 2004) [S/S BY MIL-STD-3003]., MIL-STD-281A, dated 14 October 1960, is hereby canceled. Future acquisitions for this specification are no longer covered under MIL-V-62038. MIL-STD-3003A(AT), 揤ehicles, Wheeled: Preparation For Shipment And Storage Of?was determined to be a suitable replacement. Users are cautioned to evaluate this document for their particular application before citing is as a replacement document.
【英文标准名称】:StandardTestMethodforDeterminingTheRelativeDensity(SpecificGravity)AndAbsorptionOfFineAggregatesUsingInfrared
【原文标准名称】:相对密度(比重)和用红外线对细集料吸收测定的标准试验方法
【标准号】:ASTMD7172-2006e1
【标准状态】:现行
【国别】:美国
【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】:D04.51
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorption;aggregate;apparentdensity;apparentrelativedensity;infrared;relativedensity;specificgravity
【摘要】:Bulkrelativedensity(specificgravity)isthecharacteristicgenerallyusedforcalculationofthevolumeoccupiedbytheaggregateinvariousmixturescontainingaggregateincludingPortlandcementconcrete,bituminousconcrete,andothermixturesthatareproportionedoranalyzedonanabsolutevolumebasis.Bulkrelativedensity(specificgravity)isusedinthecomputationofvoidsinaggregateinC1252andC29/C29M.Bulkrelativedensity(specificgravity)determinedonthesaturatedsurfacedry(SSD)basisisusediftheaggregateiswet,thatis,ifitsabsorptionhasbeensatisfied.Conversely,thebulkrelativedensity(specificgravity)determinedontheoven-drybasisisusedforcomputationswhentheaggregateisdryorassumedtobedry.Apparentrelativedensity(specificgravity)pertainstotherelativedensityofthesolidmaterialmakinguptheconstituentparticlesnotincludingtheporespacewithinthenbsp;nbsp;nbsp;particlesthatisaccessibletowater.Thisvalueisnotwidelyusedinconstructionnbsp;nbsp;nbsp;aggregatetechnology.Waterabsorptionvaluesareusedtocalculatethechangeinthemassofannbsp;nbsp;nbsp;aggregateduetowaterabsorbedintheporespaceswithintheconstituentnbsp;nbsp;nbsp;particles,comparedtothedrycondition,whenitisdeemedthattheaggregatenbsp;nbsp;nbsp;hasbeenincontactwithwaterlongenoughtosatisfymostoftheabsorptionnbsp;nbsp;nbsp;potential.Thelaboratorystandardforabsorptionisthatobtainedafternbsp;nbsp;nbsp;submergingdryaggregateforapproximately24hoursinwater.Aggregatesnbsp;nbsp;nbsp;minedfrombelowthewatertablemayhaveahigherabsorptionwhenused,ifnotallowedtodry.Conversely,someaggregateswhenusedmaycontainannbsp;nbsp;nbsp;amountofabsorbedmoisturelessthanthe24hourssoakedcondition:Foranaggregatethathasbeenincontactwithwaterandthathadfreemoistureonthenbsp;nbsp;nbsp;particlesurface,thepercentageoffreemoisturecanbedeterminedbydeductingnbsp;nbsp;nbsp;theabsorptionfromthetotalmoisturecontentdeterminedaccordingtoC566bydrying.1.1Thistestmethodcoversthedeterminationoftherelativedensity(specificgravity)andabsorptionoffineaggregates.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforSamplingofSoilUsingtheHydraulicallyOperatedStationaryPistonSampler
【原文标准名称】:用液压控固定活塞采样器进行土壤抽样的标准实施规程
【标准号】:ASTMD6519-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:P22
【国际标准分类号】:13_080_01
【页数】:8P;A4
【正文语种】:英语
