ACI 309.1 R-93 Behavior of Fresh Concrete During Vibration

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1、ACI309.1R-93(Reapproved1998)BehaviorofFreshConcreteDuringVibrationReportedbyACICommittee309RalphO.LaneChairman,OriginatingCommitteeGeorgeR.U.BurgJ.NeilMustardDonaldLSchlegelClemH.SpitlerLarsForssblad*SandorPopovicsJamesM.ShilstoneHerbertA.WeltonJohnC.RingThomasJ.Reading*JohnR.SmithRogerE.Wilso

2、n*GaryR.MassKennethLSaucierCommitteevotingonthe1993revisions:CelikH.OzyildirimChairmanDanA.BonikowskyJosephJ.FratianniRogerA.MinnichThomasJ.ReadingNeilA.CummingStevenH.GeblerMikaelP.J.OlsenDonaldLSchlegelTimothyP.DolenGaryR.MassSandorPopovicsBradleyK.VialettaJeromeH.FordRichardE.MillerJr.Thisr

3、eportcoversthestateoftheartofprocessesthattakeplaceintheChapter4-References,pg.309.1R-17consolidationoffreshconcreteduringvibrationTheseprocesses,theologicaland4.l-Standardsdocumentsmechanicalinnature,arediscussedtoprovidebetterunderstandingoftheprin-4.2-Citedreferencesciples.Thefirstchapterpr

4、esentsthehistoricaldevelopmentsrelativetoconsol-idatingconcrete.Thesecondchapterdealswiththerheologicalbehaviorofconcreteduringconsolidationandtheassociatedmechanismsofdynamiccom-CHAPTERl-HISTORYOFCONCRETEVIBRATIONpaction.Thethirdchapterpresentstheprinciplesofvibratorymotionoccurringduringvibr

5、ation,vibratorymethods,andexperimentaltestresults.ContinuingAttheturnofthe20thcentury,concretemixtureswereresearchinthefieldofconcretevibration,asevidencedbytheextensiveliteraturegenerallyplacedverydry.Thematerialwasdepositedindevotedtothesubject,isaddressed.shallowliftsandrammedintoplacebyhea

6、vytampers,whichKeywords:admixtures:aggregates;aggregateshapeandtexture;aggregatesize;involvedhardmanuallabor.Large,opensectionscontainingamplitude;compacting;consolidation;damping;energy;freshconcretes;hardening;littleornoreinforcement,suchasfoundations,retaininghistory;mechanicalimpedance;mix

7、proportioning;reviews;rheologicalproperties;stability;vibration;vibrators(machinery).walls,anddamsweretypical.Manyofthesestructuresarestillinservice,provingthatthistypeofconstructionproducedstrong,durableconcrete.CONTENTSLater,reinforce