ASTM D4959-2007 用直接加热法测定土壤中含水量的标准试验方法

作者:标准资料网 时间:2024-05-18 20:06:45  浏览:9508   来源:标准资料网

【英文标准名称】:StandardTestMethodforDeterminationofWater(Moisture)ContentofSoilByDirectHeating
【原文标准名称】:用直接加热法测定土壤中含水量的标准试验方法
【标准号】:ASTMD4959-2007
【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】:D18.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:加热;含水量;土壤分析;土壤
【英文主题词】:acceptancetests;compactioncontrol;density;directheating;laboratorymoisturetests;moisturecontent;moisturecontrol;qualitycontrol;rapidmethod;soilmoisture;testprocedure
【摘要】:1.1Thistestmethodcoversproceduresfordeterminingthewater(moisture)contentofsoilsbydryingwithdirectheat,suchasusingahotplate,stove,blowtorch,etc.1.2ThistestmethodcanbeusedasasubstituteforTestMethodsD2216whenmorerapidresultsaredesiredtoexpediteotherphasesoftestingandslightlylessaccurateresultsareacceptable.1.3WhenquestionsofaccuracybetweenthistestmethodandTestMethodsD2216arise,TestMethodsD2216shallbetherefereemethod.1.4Thistestmethodisapplicableformostsoiltypes.Forsomesoils,suchasthosecontainingsignificantamountsofhalloysite,mica,montmorillonite,gypsum,orotherhydratedmaterials,highlyorganicsoilsorsoilsthatcontaindissolvedsolids,(suchassaltinthecaseofmarinedeposits),thistestmethodmaynotyieldreliablewatercontentvalues.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.1.6RefertoPracticeD6026forguidanceconcerningtheuseofsignificantfigures.Thisisimportantifthewatercontentwillbeusedtocalculateotherrelationshipssuchasmoistmasstodrymassorviceversa,wetunitweighttodryunitweightorviceversa,andtotaldensitytodrydensityorviceversa.Forexample,iffoursignificantdigitsarerequiredinanyoftheabovecalculations,thenthewatercontenthastoberecordedtothenearest0.1%.Thisoccurssince1plusthewatercontent(notinpercent)willhavefoursignificantdigits,While,ifthreesignificantdigitsareacceptable,thenthewatercontentcanberecordedtothenearest1%1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B11
【国际标准分类号】:13_080_40
【页数】:6P.;A4
【正文语种】: