【英文标准名称】:StandardTestMethodforMaterialsFinerthan75-956;m(No.200)SieveinMineralAggregatesbyWashing
【原文标准名称】:用冲洗法测定矿物集料中细于200号筛孔(75μm)的材料的标准试验方法
【标准号】:ASTMC117-2004
【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】:C09.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:矿质集料;集料;清洗;筛分设备;细粒材料;建筑;试验;材料;施工材料
【英文主题词】:aggregate;coarseaggregate;fineaggregate;grading;lossbywashing;75m(No.200)sieve;sizeanalysis
【摘要】:Materialfinerthanthe75-x03BC;m(No.200)sievecanbeseparatedfromlargerparticlesmuchmoreefficientlyandcompletelybywetsievingthanthroughtheuseofdrysieving.Therefore,whenaccuratedeterminationsofmaterialfinerthan75x03BC;minfineorcoarseaggregatearedesired,thistestmethodisusedonthesamplepriortodrysievinginaccordancewithTestMethodC136.TheresultsofthistestmethodareincludedinthecalculationinTestMethodC136,andthetotalamountofmaterialfinerthan75x03BC;mbywashing,plusthatobtainedbydrysievingthesamesample,isreportedwiththeresultsofTestMethodC136.Usually,theadditionalamountofmaterialfinerthan75x03BC;mobtainedinthedrysievingprocessisasmallamount.Ifitislarge,theefficiencyofthewashingoperationshouldbechecked.Itcouldalsobeanindicationofdegradationoftheaggregate.Plainwaterisadequatetoseparatethematerialfinerthan75x03BC;mfromthecoarsermaterialwithmostaggregates.Insomecases,thefinermaterialisadheringtothelargerparticles,suchassomeclaycoatingsandcoatingsonaggregatesthathavebeenextractedfrombituminousmixtures.Inthesecases,thefinematerialwillbeseparatedmorereadilywithawettingagentinthewater.1.1Thistestmethodcoversthedeterminationoftheamountofmaterialfinerthana75-956;m(No.200)sieveinaggregatebywashing.Clayparticlesandotheraggregateparticlesthataredispersedbythewashwater,aswellaswater-solublematerials,willberemovedfromtheaggregateduringthetest.1.2Twoproceduresareincluded,oneusingonlywaterforthewashingoperation,andtheotherincludingawettingagenttoassistthelooseningofthematerialfinerthanthe75-956;m(No.200)sievefromthecoarsermaterial.Unlessotherwisespecified,ProcedureA(wateronly)shallbeused.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】: