作者:标准资料网 时间:2024-05-20 18:12:44   浏览:8402   来源:标准资料网

【英文标准名称】:StandardTestMethodforDensityofSoilandRockIn-PlaceatDepthsBelowtheSurfacebyNuclearMethods
【原文标准名称】:用核子法测量地表深处应有位置的土壤和岩石密度的标准试验方法
【标准号】:ASTMD5195-2002
【标准状态】:现行
【国别】:
【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】:D18.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:密度测量;试验;岩石;土壤;核技术
【英文主题词】:depthprobe;in-placedensity;insitudensity;nuclearmethods;
【摘要】:Thistestmethodisusefulasarapid,nondestructivetechniqueforthecalculationofthein-placedensityofsoilandrockatdesireddepthsbelowthesurfaceasopposedtosurfacemeasurementsinaccordancewithTestMethodD2922.Thistestmethodisusefulforinformationalandresearchpurposes.ItshouldonlybeusedforqualitycontrolandacceptancetestingwhencorrelatedtootheracceptedmethodssuchasTestMethodD2937.Thenon-destructivenatureofthetestmethodallowsrepetitivemeasurementstobemadeatasingletestlocationforstatisticalanalysisandtomonitorchangesovertime.ThefundamentalassumptionsinherentinthistestmethodarethatComptonscatteringandphotoelectricabsorptionarethedominantinteractionsofthegammasandthematerialundertest.1.1Thistestmethodcoversthecalculationofthedensityofsoilandrockbytheattenuationofgammaradiation,wherethegammasourceandthegammadetectorareplacedatthedesireddepthinaboredholelinedbyanaccesstube.1.2Thedensity,inmassperunitvolumeofthematerialundertest,iscalculatedbycomparingthedetectedrateofgammaradiationwithpreviouslyestablishedcalibrationdata(seeAnnexA1).1.3Aprecisionstatementhasnotbeendevelopedforthisstandardatthistime.Therefore,thisstandardshouldnotbeusedforacceptanceorrejectionofamaterialforpurchasignpurposesunlesscorrelatedtootheracceptedASTMstandards.1.4ThevaluesstatedinSIunitsareregardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonlyandmaybeapproximate.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection6,"Hazards."
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:5P.;A4
【正文语种】: