【英文标准名称】:StandardTestMethodforResistanceofFineAggregatetoDegradationbyAbrasionintheMicro-DevalApparatus
【原文标准名称】:使用微型台佛尔仪测量细精级料抗磨损降级的试验方法
【标准号】:ASTMD7428-2008e1
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D04.51
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:abrasionresistance;fineaggregate;micro-Deval;test;Abrasionresistance;Fineaggregate;Micro-Devalapparatus
【摘要】:TheMicro-Devalabrasiontestisatestoffineaggregatetodetermineabrasionlossinthepresenceofwaterandanabrasivecharge.Manyaggregatesaremoresusceptibletoabrasionwhenwetthandry,andtheuseofwaterinthistestincorporatesthisreductioninresistancetodegradation.Thetestresultsarehelpfulinevaluatingthetoughness/abrasionresistanceoffineaggregatesubjecttoabrasionwhenadequateinformationisnotavailablefromservicerecords.Thistestissuitableformeasuringtheamountofweak,softmaterialsuchasshaleorshaleycarbonateinfineaggregate.Materialsthatgivealowlossinthistestareunlikelytoexhibitsignificantdegradationduringhandling,mixingorplacing.ThereisarelationshipbetweendryingshrinkageofcementmortarandMicro-Devalabrasionlossoffineaggregate,withhigherlossmaterialsresultinginhigherdryingshrinkage.Descriptionsofthedevelopmentofthetestandtherelationshipwithotherpropertieshavebeenpublished.,,TheMicro-Devalabrasiontestonfineaggregateisusefulfordetectingchangesinpropertiesofaggregateproducedfromanaggregatesourceaspartofaqualitycontrolorqualityassuranceprocess.TheMicro-Devalabrasiontestonfineaggregate,incontrasttotheversiononcoarseaggregate,hasasignificantcorrelationwiththeMagnesiumSulfatesoundnesslossoffineaggregate.TheMicro-Devaltestonfineaggregatehasbetterprecisionthanthesulfatesoundnesstest,isquicker,andmaybeusedinplaceofthattest.Adviceonspecificvaluesforselectionofaggregatewillbefoundintheappendix.1.1ThistestmethodcoversaprocedurefortestingfineaggregateforresistancetoabrasionusingtheMicro-Devalapparatus.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thetextofthismethodreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthetestmethod.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:6P.;A4
【正文语种】:英语


【英文标准名称】:Dentaltweezers-Part2:Meriamtypes(ISO15098-2:2000);GermanversionENISO15098-2:2000
【原文标准名称】:牙科镊子.第2部分:梅利阿姆(Meriam)型(ISO15098-2:2000);德文版本ENISO15098-2:2000
【标准号】:ENISO15098-2-2000
【标准状态】:现行
【国别】:
【发布日期】:2000-08
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:尺寸;外科钳镊;定义;牙钻手柄;牙科学;牙科设备;材料规范;作标记;机械试验;牙科镊子;规范(验收);试验
【英文主题词】:Definition;Definitions;Dentalequipment;Dentalhandpieces;Dentaltweezers;Dentistry;Dimensions;Forceps;Marking;Materialsspecification;Mechanicaltesting;Meriam;Specification(approval);Testing
【摘要】:
【中国标准分类号】:C33
【国际标准分类号】:11_060_25
【页数】:8P.;A4
【正文语种】:英语