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1、304.6R-91GuidefortheUseofVolumetric-MeasuringandContinuous-MixingConcreteEquipment(Reapproved1997)reportedbyACICommittee304JamesS.PierceChairmanArthurC.CheffDonaldE.GrahamGaryR.MassThomasR.Clapp*NeilR.GuptillKurtR.MelbyJamesL.CopeTerenceC.Holland*Ric
2、hardW.NarvaWayneJ.CostaJamesHubbardJohnH.Skinner,IIIHenriJeanDeCarbonelThomasA.JohnsonPaulR.Stodola*+RobertM.EshbachRobertA.KelseyWilliamX.SypherJamesR.FloreyJohnC.KingLouisL.SzilandiCliffordGordonWilliamC.KrellRobertE.TobinFrancisC.WilsonThisguidein
3、cludesashorthistoryofandinformationonthebasic3.4-Materialsdesignandoperationofequipmentusedtoproduceconcretebyvol-3.5-Personnelqualificationsumetricmeasurementandcontinuousmixing(VMCM),frequentlycalledmobilemixers.Definitions,applications,andqualitya
4、ssur-Chapter4-Applicationsancetestingarediscussed.Theuseofthisequipmentiscomparedto4.l-Generalweigh-batch-mixequipmentforsomeofthelimiteddifferences.4.2-Mixtureswithshortworkingtimes4.3-Low-slumpmixturesKeywords:admixtures;aggregates;batching;calibra
5、ting;cements;coldweather4.4-Longunloadingtimesconstruction;coloredconcrete;concreteconstruction;fieldtests;freshcon-4.5-Concreteatremotesitescretes;grout;hotweatherconstruction;materialhandling;measurement;mix-ing;mixingplants;mixingtime;mixproportio
6、ning;polymerconcrete:precast4.6-Makingsmalldeliveriesconcrete;processcontrol;productionmethods;shotcrete;slump;transitmix-4.7-Precastoperationsers.4.8-Hotweatherconcreting4.9-Miningapplications4.10-Groutingandpilefilling4.1l-ColoredconcretesCONTENTS4
7、.12-EmergencyapplicationsChapter1-Introduction1.l--GeneralChapter5-Qualitycontrolandtesting1.2-Discussion5.1-General1.3-History5.2-Calibration5.3-ProductiontestingChapter2-Equipment2.l-MaterialsstorageandmeasurementChapter6-Operationalprecautions2.2-
8、Mixers6.1-General2.3-Equipmentcondition6.2-Coldweatherconcrete6.3-HotweatherconcreteChapter3-Operations6.4-Aggregatemoisture3.1-General6.5-Rapidslumploss3.2-Productionrates6.6-Useofadmixtures3.3-Planning6.7-FreshconcretepropertiesACICommitteeReports,