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ID:37576554
大小:2.86 MB
页数:63页
时间:2019-05-25
《ACI(美国混凝土学会234委员会标准)硅粉在混凝土中应用指南》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、ACI234R-06GuidefortheUseofSilicaFumeinConcreteReportedbyACICommittee234PerFidjestolAnthonyN.KojundicChairSecretaryJamesM.AldredTerenceC.HollandDudleyR.MorganDellaM.RoyMarkA.BuryR.DougHootonJanOlekMarcoJ.ScaliRachelJ.DetwilerTarifM.JaberH.CelikOzyildirimMichaelD.A.ThomasFo
2、uadH.FouadKamalH.KhayatMichaelF.PistilliJohnT.WolsieferWilliamHalczakV.M.MalhotraJean-ClaudeRoumainMin-HongZhangThisreportdescribesthephysicalandchemicalpropertiesofsilicafume;2.4—Fineness,particleshape,andoversizematerialhowsilicafumeinteractswithportlandcement;theeffect
3、sofsilicafumeon2.5—Chemicalcompositionthepropertiesoffreshandhardenedconcrete;recenttypicalapplications2.6—Crystallinityofsilica-fumeconcrete;howsilica-fumeconcreteisproportioned,specified,andhandledinthefield;andareaswhereadditionalresearchisneeded.2.7—Variability2.8—Rel
4、atingphysicalandchemicalpropertiestoperfor-Keywords:curing;durability;high-rangewater-reducingadmixture;high-manceinconcretestrengthconcrete;placing;plastic-shrinkagecracking;silicafume;timeof2.9—Qualitycontrolsetting;water-reducingadmixture;workability.Chapter3—Mechanism
5、sbywhichsilicafumeCONTENTSmodifiescementpaste,mortar,andconcrete,Chapter1—Introduction,p.234R-2p.234R-91.1—General3.1—General1.2—Whatissilicafume?3.2—Physicaleffects1.3—Silicafumeversusotherformsofsilica3.3—Chemicaleffects1.4—Usingsilicafumeinconcrete3.4—Microstructuremod
6、ifications1.5—Usingsilicafumeinblendedcements3.5—Self-desiccationandwaterofhydration3.6—Autogenousshrinkage(volumechange)1.6—Worldwideavailabilityofsilicafume3.7—Chemicalcompositionofporefluid1.7—Typesofsilicafumeproductsavailable3.8—Reactionsincombinationwithflyashorgrou
7、nd-1.8—Healthhazardsgranulatedblast-furnaceslag1.9—Environmentalimpact3.9—Reactionswithdifferenttypesofportlandcements3.10—HeatofhydrationChapter2—Physicalpropertiesandchemical3.11—Reactionswithchemicaladmixturescompositionofsilicafume,p.234R-62.1—Color2.2—Specificgravity
8、Chapter4—Effectsofsilicafumeonpropertiesoffreshconcrete,p.234R-172.3—Bulkdensity4.1—Waterdemand4
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