ACI 304.5R-91 Batching, Mixing, and Job Control of Lightweight Concrete

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1、ACI304.5R-91(Reapproved1997)Batching,Mixing,andJobControlofLightweightConcreteReportedbyACICommittee304JamesL.Cope*ChairmanRaymondA.AyersWilliamC.KrellWilliamJ.SimRichardH.Campbell*BruceA.LambertonJamesH.SprouseJosephC.CarsonStanleyH.LeePaulR.Stodola*WayneJ.CostaKurtR.MelbyWilliamX

2、.SypherDonaldE.GrahamRichardW.NarvaRobertE.Tobin?TerenceC.HollandLeoP.NicholsoniJ.CraigWilliamsGordonM.KiddJamesS.Pierce*FrancisC.Wilson**MemberofTaskGroupwhopreparedthisreport.7ChairmanofTaskGroup.MembersofCommittee304votingon1991revisions:PaulR.Stodola*ChairmanJamesE.Bennett,Jr.C

3、liffordGordonGaryR.MassJohnB.CaldwellDonaldE.GrahamRichardW.NarvaArthurC.CheffNeilR.GuptillJamesS.PierceThomasR.ClappTerenceC.HollandJohnH.SkinnerIIIJamesLCopeJamesHubbardWilliamX.SyphertWayneJ.CostaThomasA.JohnsonLouisL.SziladiHenriJeanDeCarbonelRobertA.KelseyRobertE.Tobin*RobertM

4、.EshbachJohnC.KingFrancisC.WilsonJamesR.Florey*WilliamC.Krell*MembersofSubcommitteewhopreparedthisrevision.7ChairmanofSubcommittee.ThisreportcoversmanyofthepracticalaspectsofbatchingoflightweightKeywords:absorption;aggregates;airentrainment;batching;bulkaggregateconcreteandincludes

5、commentsonmixingandjobcontrols.density;coarseaggregates;density(mass/volume);fineaggregates;Proceduresforbatchingarecoveredindetail,enablingtheusertoachievelightweightaggregateconcretes;lightweightaggregates;mixers;mixing;properyieldundervaryingconditionsofmoistureandunitweightofag

6、-mixproportioning;moisturecontent;qualitycontrol;saturation;slumpgregates.Absorbedwaterandfreewaterareexplained.Pertinentdetailsoftests;voids;water;weightmeasurement;wetting.mixeroperationandjobcontrolsarealsocoveredtoassureaqualitypro-ductmeetingapplicablejobspecifications.ACI304.

7、5R-91supersedesACI304.5R-82effectiveNov.1,1991.NumerousACICommitteeReports,Guides,StandardPractices,andCom-editorialandminorrevisionshavebeenmade.Referenceshavebeenaddedandmentariesareintendedforguidanceindesigning,planning,yeardesignationshavebeenremovedfromrecommendedreferencesto

8、maketheexecuting,orinspect