ASTM D2435-2004 通过增长载荷进行土壤单向固结性能的标准试验方法
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【英文标准名称】:StandardTestMethodsforOne-DimensionalConsolidationPropertiesofSoilsUsingIncrementalLoading
【原文标准名称】:通过增长载荷进行土壤单向固结性能的标准试验方法
【标准号】:ASTMD2435-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D18.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:土壤;建筑;试验;施工材料;特性;固结性
【英文主题词】:compressibility;compressioncurves;consolidation;consolidationcoefficient;consolidationtest;consolidometer;preconsolidationpressure;primaryconsolidation;rebound;secondarycompression;settlement;swelling
【摘要】:1.1Thistestmethodcoversproceduresfordeterminingthemagnitudeandrateofconsolidationofsoilwhenitisrestrainedlaterallyanddrainedaxiallywhilesubjectedtoincrementallyappliedcontrolled-stressloading.Twoalternativeproceduresareprovidedasfollows:1.1.1TestMethodA8212;Thistestmethodisperformedwithconstantloadincrementdurationof24h,ormultiplesthereof.Time-deformationreadingsarerequiredonaminimumoftwoloadincrements.1.1.2TestMethodB8212;Time-deformationreadingsarerequiredonallloadincrements.Successiveloadincrementsareappliedafter100%primaryconsolidationisreached,oratconstanttimeincrementsasdescribedinTestMethodA.Note18212;Thedeterminationoftherateandmagnitudeofconsolidationofsoilwhenitissubjectedtocontrolled-strainloadingiscoveredbyTestMethodD4186.1.2Thistestmethodismostcommonlyperformedonundisturbedsamplesoffinegrainedsoilsnaturallysedimentedinwater,however,thebasictestprocedureisapplicable,aswell,tospecimensofcompactedsoilsandundisturbedsamplesofsoilsformedbyotherprocessessuchasweatheringorchemicalalteration.Evaluationtechniquesspecifiedinthistestmethodaregenerallyapplicabletosoilsnaturallysedimentedinwater.Testsperformedonothersoilssuchascompactedandresidual(weatheredorchemicallyaltered)soilsmayrequirespecialevaluationtechniques.1.3Itshallbetheresponsibilityoftheagencyrequestingthistesttospecifythemagnitudeandsequenceofeachloadincrement,includingthelocationofareboundcycle,ifrequired,and,forTestMethodA,theloadincrementsforwhichtime-deformationreadingsaredesired.Note28212;Time-deformationreadingsarerequiredtodeterminethetimeforcompletionofprimaryconsolidationandforevaluatingthecoefficientofconsolidation.Sincecvarieswithstresslevelandloadincrement(loadingorunloading),theloadincrementswithtimedreadingsmustbeselectedwithspecificreferencetotheindividualproject.Alternatively,therequestingagencymayspecifyTestMethodBwhereinthetime-deformationreadingsaretakenonallloadincrements.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesstatedininch-poundunitsareapproximateandgivenforguidanceonly.ReportingoftestresultsinunitsotherthanSIshallnotberegardedasnonconformancewiththistestmethod.1.4.1Intheengineeringprofessionitiscustomarypracticetouse,interchangeably,unitsrepresentingbothmassandforce,unlessdynamiccalculation(F=Ma)areinvolved.Thisimplicitlycombinestwoseparatesystemsofunits,thatis,theabsolutesystemandthegravimetricsystem.Itisscientificallyundesirabletocombinetwoseparatesystemswithinasinglestandard.ThistestmethodhasbeenwrittenusingSIunits;however,inch-poundconversionsaregiveninthegravimetricsystem,wherethepound(lbf)representsaunitofforce(weight).Theuseofbalancesorscalesrecordingpoundsofmass(lbm),ortherecordingofdensityinlb/ftshouldnotberegardedasnonconformancewiththistestmethod.1.5AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.5.1Themethodusedtospecifyhowdataarecollected,calculated,orrecordedinthisstandardisnotdirectlyrelatedtotheaccuracytowhichthedatacanbeappliedindesignorotheruses,orboth.Howoneappliestheresultsobtainedusingthisstandardisbeyonditsscope.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,itany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityof......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:10P.;A4
【正文语种】:
【原文标准名称】:通过增长载荷进行土壤单向固结性能的标准试验方法
【标准号】:ASTMD2435-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D18.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:土壤;建筑;试验;施工材料;特性;固结性
【英文主题词】:compressibility;compressioncurves;consolidation;consolidationcoefficient;consolidationtest;consolidometer;preconsolidationpressure;primaryconsolidation;rebound;secondarycompression;settlement;swelling
【摘要】:1.1Thistestmethodcoversproceduresfordeterminingthemagnitudeandrateofconsolidationofsoilwhenitisrestrainedlaterallyanddrainedaxiallywhilesubjectedtoincrementallyappliedcontrolled-stressloading.Twoalternativeproceduresareprovidedasfollows:1.1.1TestMethodA8212;Thistestmethodisperformedwithconstantloadincrementdurationof24h,ormultiplesthereof.Time-deformationreadingsarerequiredonaminimumoftwoloadincrements.1.1.2TestMethodB8212;Time-deformationreadingsarerequiredonallloadincrements.Successiveloadincrementsareappliedafter100%primaryconsolidationisreached,oratconstanttimeincrementsasdescribedinTestMethodA.Note18212;Thedeterminationoftherateandmagnitudeofconsolidationofsoilwhenitissubjectedtocontrolled-strainloadingiscoveredbyTestMethodD4186.1.2Thistestmethodismostcommonlyperformedonundisturbedsamplesoffinegrainedsoilsnaturallysedimentedinwater,however,thebasictestprocedureisapplicable,aswell,tospecimensofcompactedsoilsandundisturbedsamplesofsoilsformedbyotherprocessessuchasweatheringorchemicalalteration.Evaluationtechniquesspecifiedinthistestmethodaregenerallyapplicabletosoilsnaturallysedimentedinwater.Testsperformedonothersoilssuchascompactedandresidual(weatheredorchemicallyaltered)soilsmayrequirespecialevaluationtechniques.1.3Itshallbetheresponsibilityoftheagencyrequestingthistesttospecifythemagnitudeandsequenceofeachloadincrement,includingthelocationofareboundcycle,ifrequired,and,forTestMethodA,theloadincrementsforwhichtime-deformationreadingsaredesired.Note28212;Time-deformationreadingsarerequiredtodeterminethetimeforcompletionofprimaryconsolidationandforevaluatingthecoefficientofconsolidation.Sincecvarieswithstresslevelandloadincrement(loadingorunloading),theloadincrementswithtimedreadingsmustbeselectedwithspecificreferencetotheindividualproject.Alternatively,therequestingagencymayspecifyTestMethodBwhereinthetime-deformationreadingsaretakenonallloadincrements.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesstatedininch-poundunitsareapproximateandgivenforguidanceonly.ReportingoftestresultsinunitsotherthanSIshallnotberegardedasnonconformancewiththistestmethod.1.4.1Intheengineeringprofessionitiscustomarypracticetouse,interchangeably,unitsrepresentingbothmassandforce,unlessdynamiccalculation(F=Ma)areinvolved.Thisimplicitlycombinestwoseparatesystemsofunits,thatis,theabsolutesystemandthegravimetricsystem.Itisscientificallyundesirabletocombinetwoseparatesystemswithinasinglestandard.ThistestmethodhasbeenwrittenusingSIunits;however,inch-poundconversionsaregiveninthegravimetricsystem,wherethepound(lbf)representsaunitofforce(weight).Theuseofbalancesorscalesrecordingpoundsofmass(lbm),ortherecordingofdensityinlb/ftshouldnotberegardedasnonconformancewiththistestmethod.1.5AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.5.1Themethodusedtospecifyhowdataarecollected,calculated,orrecordedinthisstandardisnotdirectlyrelatedtotheaccuracytowhichthedatacanbeappliedindesignorotheruses,orboth.Howoneappliestheresultsobtainedusingthisstandardisbeyonditsscope.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,itany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityof......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:10P.;A4
【正文语种】:
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