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【英文标准名称】:StandardTestMethodforAcceleratedCompressiveCreepofGeosyntheticMaterialsBasedonTime-TemperatureSuperpositionUsingtheSteppedIsothermalMethod
【原文标准名称】:使用阶段等温法对基于时间-温度叠加的土工合成材料的加速压缩蠕变的标准试验方法
【标准号】:ASTMD7361-2007
【标准状态】:现行
【国别】:美国
【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】:D35.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:creep;geosynthetics;holdtest;ramp;steppedisothermalmethod;time-temperaturesuperposition
【摘要】:UseoftheSIMdecreasesthetimerequiredforcreeptooccurandtheobtainingoftheassociateddata.ThestatementssetforthinSection1.5areveryimportantinthecontextofsignificanceanduse,aswellasscopeofthestandard.Creeptestdataareusedtocalculatethecreepmodulusofmaterialsasafunctionoftime.Thesedataarethenusedtopredictthelong-termcreepdeformationexpectedofgeosyntheticsusedindrainageapplications.Note18212;Currently,SIMtestinghasfocusedmainlygeonetsmadefromhighdensitypolyethylene.Additionaltestingonothermaterialsisongoing.R+Htestingisdonetoestablishtherangeofcreepstrainsexperiencedinthebriefperiodofveryrapidresponsefollowingthepeakoftheloadramp.1.1ThistestmethodcoversacceleratedtestingforcompressivecreeppropertiesusingtheSteppedIsothermalMethod(SIM).1.2ThetestmethodisfocusedongeosyntheticdrainagematerialssuchasHDPEgeonetspecimens.1.3nbsp;nbsp;nbsp;TheSIMtestsarelaterallyunconfinedtestsbasedontime-temperaturesuperpositionprocedures.1.4RampandHold(R+H)testsmaybecompletedinconjunctionwithSIMtests.TheyaredesignedtoprovideadditionalestimatesoftheinitialrapidcompressivecreepstrainlevelsappropriatefortheSIMresults.1.5Thismethodcanbeusedtoestablishthesustainedloadcompressivecreepcharacteristicsofageosyntheticthatdemonstratesarelationshipbetweentime-dependentbehaviorandtemperature.Resultsofthismethodaretobeusedtoaugmentresultsofcompressivecreeptestsperformedat20x00B1;1x00B0;Candmaynotbeusedasthesolebasisfordeterminationoflongtermcompressivecreepbehaviorofgeosyntheticmaterial.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W59
【国际标准分类号】:59_080_70
【页数】:8P.;A4
【正文语种】:英语