【英文标准名称】:StandardTestMethodforDeterminingDensityofStructuralLightweightConcrete
【原文标准名称】:结构轻质混凝土密度的标准试验方法
【标准号】:ASTMC567-2000
【标准状态】:作废
【国别】:美国
【发布日期】:2000
【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】:轻质混凝土;单位重量;重量;混凝土;混凝土;集料;施工材料;试验
【英文主题词】:unitweight;aggregates;weights;concretes;lightweightconcrete;concrete;testing;constructionmaterials;tests
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:3P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforMeasuringDeflectionswithaLightWeightDeflectometer(LWD)
【原文标准名称】:用轻型偏度计(LWD)测量偏斜的标准试验方法
【标准号】:ASTME2583-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E17.41
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:偏斜;轻;测量;道路建筑;测试;重量
【英文主题词】:deflectionsurveys;deflectiontesting;FallingWeightDeflectometer(FWD);LightWeightDeflectometer(LWD);impulsedeflectiontesting;load-deflectiontesting;Nondestructivetesting(NDT);pavementdeflection;pavementtesting;pavementlayermodulus;
【摘要】:Thistestmethodcoversthedeterminationofsurfacedeflectionsasaresultoftheapplicationofanimpulseload.Theresultingdeflectionsaremeasuredatthecenteroftheappliedloadandmayalsobemeasuredatvariousdistancesawayfromtheload.Deflectionsmaybeeithercorrelateddirectlytopavementperformanceorusedtodeterminein-situmaterialcharacteristicsofthepavementlayers.Someusesofdataincludequalitycontrolandqualityassuranceofcompactedlayers,structuralevaluationofloadcarryingcapacity,anddeterminationofthicknessrequirementsforhighwayandairfieldpavements(seeGuideD4695).Note18212;Sincepavementandsubgradematerialsmaybestressdependent,caremustbetakenwhenanalyzingLWDtestdataonunboundmaterialssothattheappliedstresswillcloselymatchthestressvalueappliedbythedesignwheelloadatthepavementsurface.Note28212;Thevolumeofthepavementandsubgradematerialsaffectedbytheloadisafunctionofthemagnitudeoftheload.Therefore,caremustbetakenwhenanalyzingtheresults,sincethedataobtainedbytheLWDmaybeobtainedfromasmallervolumeoftheunboundmaterialsthanundertheinfluenceofaheavymovingwheelloadatthepavementsurface.1.1ThistestmethodcoversthedeterminationofdeflectionsofpavedandunpavedsurfaceswithaLightWeightDeflectometer(LWD).ThisdeviceisalsoreferredtoasaPortableFalling-WeightDeflectometer(PFWD).TheLWDislightweight,portableandgenerallyusedfortestingunboundpavementlayers.ThedeflectionsmeasuredusinganLWDcanbeusedtodeterminethestiffnessofboundandunboundpavementsurfacesusingappropriateback-orforwardcalculationanalysistechniques.1.2si-value;1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:R86
【国际标准分类号】:93_080_10
【页数】:3P.;A4
【正文语种】: