【英文标准名称】:StandardSpecificationforGradedAggregateMaterialForBasesorSubbasesforHighwaysorAirports
【原文标准名称】:公路或机场底层或次底层用分级集料材料的标准规范
【标准号】:ASTMD2940/D2940M-2009
【标准状态】:现行
【国别】:
【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】:D04.50
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:aggregate;basecourse;subbase;coarseaggregate;fineaggregate;Aggregate--specifications;Airportpavement--specifications;Gradedaggregatematerial;Highwayconstruction--specifications;Pavementsurfaces--specifications
【摘要】:1.1Thisspecificationcoversquality-controlledgradedaggregatesthat,whenhauledtoandproperlyspreadandcompactedonapreparedgradetoappropriatedensitystandards,maybeexpectedtoprovideadequatestabilityandloadsupportforuseashighwayorairportbasesorsubbases.Note18212;Theengineeriscautionedtoprovideappropriateconstructionspecificationstoensurecompactiontoanextentthatfurtherdensificationfromtrafficloadingsonthecompletedpavementwillbeinsignificant.Themethodsuggestedistorequirecompactiononafirmfoundationofashortcontrolstripofthematerialatasuitablemoisturecontent,bymeansofvibratoryorotherproveneffectiverollersortampers,untilnofurtherincreaseindensityresults.Compactionrequirementsshouldensurethatanaveragedensityofcertainappropriatepercentagesofthecontrolstripmaximumdensitybeachievedonthebalanceofthejob;forbasecourses,98%issuggestedastheminimumaveragerequirement.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:93_080_10;93_120;93_080_20
【页数】:3P.;A4
【正文语种】: