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【英文标准名称】:StandardTestMethodforMeasuringStiffnessandApparentModulusofSoilandSoil-AggregateIn-PlacebyElectro-MechanicalMethod
【原文标准名称】:用电动机械法测量土壤和土壤集料实体的硬挺度和表观模数的标准试验方法
【标准号】:ASTMD6758-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D18.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compactioncontrol;in-placemodulus;in-placestiffness;in-situtest;non-destructive;productiontesting;shearmodulus;soilstiffnesstest;stiffnessgauge;Young'smodulus;Compactioncontrol;Electromechanicalprocessing/devices;In-place
【摘要】:Theapparatusandproceduredescribedprovidesameansformeasurementofthestiffnessofalayerofsoilorsoil-aggregatemixturefromwhichaYoung''smodulusmaybedeterminedforanassumedPoisson''sratio.Lowstraincyclicloadingisappliedbytheapparatusaboutastaticloadthatisconsistentwithhighwayapplications(1).Thismethodisusefulasanon-destructivemethodformonitoringorcontrollingcompactionsoastoavoidunder-compaction,over-compactionorwastedeffort.Throughanunderstandingofhowstiffnessrelatestodensityforaparticularmaterial,moisturecontentandcompactionprocedure,thestiffnessachievedcanberelatedto%compactioninconnectionwithdensitybasedcompactioncontrolorspecifications,forexample,tomeettherequirementsofMethodD698usingstandardeffortorMethodD1557usingmodifiedeffort.Thismethodappliestosiltyandclayeymaterialscontaininggreaterthan20%fines.Insuchcases,therelationshipbetweenstiffnessanddrydensityordryunitweightissensitivetothewatercontent.Watercontentsshouldbedeterminedbyuseof:TestMethodD2216,D4643,orD4959.Ifthedeterminationcannotbemadeimmediatelyatthetimeofthestiffnessmeasurements,thensoilsamplesshallbepreservedandtransportedinaccordancewithPracticeD4220,Section8,GroupsB,C,orDsoils.Thismethodisusefulintheconstructionofroadbasesorearthworks,includingtheinstallationofburiedpipe(2).Therapid,non-penetratingnatureofthismethodissuitedtoproductiontesting,forexample,itprovidesameansoftestingthatdoesnotnecessarilyinterferewithordelayconstruction.Thismethodissuitableformitigatingtheriskofpavementfailure.Byassuringtherelativeuniformityofhighwaysubbase,subgradeandbasestiffnesses,stressesonthepavementismoreuniformlydistributed.Inthiswaythelifeofapavementisextendedandrepairsminimized.Thismethodissuitablefordeterminingwhenthesurfaceofasoilorsoil-aggregatestructureiscapableofsupportingdesignloads.Thisisusefulforstabilizedfillswherethematerialhardens(stiffens)overtimewithoutmeasurablechangesindensityormoisturecontent.Thistestmethodissuitableforthein-placedeterminationofaYoung''sandashearmodulusofsoilandsoil-aggregatemixtures(3,4).Stiffness,asmeasuredbythismethod,isrelatedtomodulus(5)fromanassumptionofPoisson''sratioandfromtheradiusofthefootoftheapparatusasfollows:where:Kgr

【中国标准分类号】:Q13
【国际标准分类号】:93_020
【页数】:5P.;A4
【正文语种】:英语


【英文标准名称】:Thermalinsulationproductsforbuildings-In-situformedloose-fillmineralwool(MW)products-Part1:specificationfortheloose-fillproductsbeforeinstallation.
【原文标准名称】:建筑物隔热产品.现场制疏松填装矿棉的产品.第1部分:安装前疏松填装产品的规范
【标准号】:NFP75-431-1-2010
【标准状态】:现行
【国别】:法国
【发布日期】:2010-04-01
【实施或试行日期】:2010-04-03
【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】:两裂墙的;建筑物;内装的;CE标记;检验设备;检查;分类;复合材料;建筑;建筑材料;定义;设计;能量经济学;交货形式;热绝缘层;就地;检验;安装;绝缘材料;作标记;砖石工程;材料性能;材料试验;测量;测量技术;矿棉;装配;珍珠岩;特性;质量保证;评级;顶层;规范;规范(验收);火焰表面传播;监督(认可);试件;试样;测试;隔热材料;隔热;热防护;热阻
【英文主题词】:Bivalved;Buildings;Built-in;CEmarking;Checkingequipment;Checks;Classification;Compositematerials;Construction;Constructionmaterials;Definitions;Design;Energyeconomics;Formofdelivery;Heatinsulatinglayer;Insitu;Inspection;Installations;Insulatingmaterials;Marking;Masonry;Materialproperties;Materialstesting;Measurement;Measuringtechniques;Mineralwool;Mounting;Perlite;Properties;Qualityassurance;Ratings;Roofspaces;Specification;Specification(approval);Surfacespreadofflame;Surveillance(approval);Testpieces;Testspecimens;Testing;Thermalinsulatingmaterials;Thermalinsulation;Thermalprotection;Thermalresistance
【摘要】:
【中国标准分类号】:Q25
【国际标准分类号】:91_100_60
【页数】:50P;A4
【正文语种】:其他