【英文标准名称】:StandardTestMethodsforWater-SolubleChloridesPresentasAdmixturesinGradedAggregateRoadMixes
【原文标准名称】:分级集料筑路混合物中作为掺合物的水溶氯化物的标准试验方法
【标准号】:ASTMD1411-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D18.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:admixture;chloridecontent;soil-stabilization;Chlorideanalysis--concrete/aggregate;Aggregate;Concreteadmixtures;Water-solublechloride
【摘要】:Thepercentageofcalciumchloride,magnesiumchloride,andalkalichloride(calculatedassodiumchloride)ingradedaggregateobtainedfromaggregateroadsoraggregatebasesunderpavedroadsisofinteresttohighwaydepartmentsusingcalciumchlorideorsodiumchloridestabilization.Thepercentagesofcalciumchlorideorsodiumchlorideobtainedinthesetestmethodsarecomparedwiththequantitiesaddedtodeterminewhethertheroadmaterialandstabilizingagentwereproperlymixed,whetherleachingofthestabilizingagentoccurred,etc.Note28212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;D3740providesameansofevaluatingsomeofthosefactors.1.1Thesetestmethodsareapplicabletothedeterminationofwater-solublecalcium,magnesium,andsodiumchloridesusedasadmixturesinthepreparationofgradedaggregateroadmaterials.1.1.1MethodA,TotalChlorides8212;Addanexcessofastandardsilvernitratesolutiontothefilteredsample;backtitratetheexcesssilverwithastandardammoniumthiocyanatesolutiontoared-orangeendpointusingVolhardindicator.1.1.2MethodB,CalciumChloride8212;CalciuminanalkalinesolutionistitratedwithstandardEDTAsolutionusingcalceinmodifiedasanindicator.Thecolorchangeisfromgreentoblue.1.1.3MethodC,MagnesiumChloride8212;Calciumandmagnesium,inasolutionbufferedtoapHof10,aretitratedwithstandardEDTAsolutionusingeriochromeblackTasanindicator.Thecolorchangeisfromredtoblue.MagnesiumchlorideiscalculatedbysubtractingtheEDTAcalciumequivalentvolumedeterminedintheanalysisforcalciumchloridefromthetotalEDTAvolumeused,toobtainthemagnesiumEDTAequivalentbydifference.1.1.4MethodD,AlkaliChloride8212;Alkalichloridesarecalculatedfromthedifferenceofthetotalchlorideandcalciumandmagnesiumdeterminations.Note18212;Thesetestmethodsassumethattheaggregatedidnotcontainsignificantamountsofthewater-solublechloridesinquestionbeforetheadmixturewasadded.Ifsignificantamountsofthesechloridesareknownorsuspectedtobepresent,theaggregateshallbetestedfortheseconstituentsaccordingtothesetestmethodsandthepropercorrectionsmade.1.2AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.2.1Themethodusedtospecifyhowdataarecollected,calculated,orrecordedinthisstandardisnotdirectlyrelatedtotheaccuracytowhichthedatacanbeappliedindesignorotheruses,orboth.Howoneappliestheresultsobtainedusingthisstandardisbeyonditsscope.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminethea......
【中国标准分类号】:Q13
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:英语