三种碱激发胶凝材料的反应机理及其产物

196200411Vol.19No.6JournalofJingmenTechnicalCollegeNov.2004[]2004-03-09[](1968-),,,.:.E-mail:[e-mail].(,448000)[]..[];;;;;[]TQ172.1[]A[]1008-4657(2004)06-0092-04,.200a,.,,,.,,30a,,.,.,.,,.,,(),,..1.Al2O3SiO2,50%80%.w(CaO)/w(SiO2)(0.10.15),[SiO4]4-,,,.Al3+[1],(SiO44-)Al3+Si4+(AlO45-)[2],,pH,(),,,,,.[SiO4]4-,.C/SCSH,,CSH.,,29Ca2+OH-CSH,pH.pH.NaOH,,Na+Ca2+Mg2+,,,[3].2(),,,.13501550,2.8g/cm3,(7.08.0g/cm3),,,,.,95%.,.3[4],MoKMn.Mo(CaO+MgO)(Al2O3+SiO2).Mo,:Mo1,Mo=1,Mo1.(K):K=CaO+MgO+Al2O3SiO2+MnO+TiO2CaOMgOAl2O3SiO2MnOTiO2.K,K,.,K1.2.MnAl2O3SiO2,Mn0.12.,..Taleing,,,.,,,,[5].[6],,()()..,.Ca-OMg-OSi-O,,,,,;,,.,,,Ca2+,,,,.,OH-,,,Si-O-SiSi-O-AlAl-O-Al,,SiO44-AlO45-Ca2+,,,[SiO4]4-.[SiO4]4-,,[7].[8],,,,.[SiO2(OH)2]2-,39,.Ca2+Al3+C-S-HCaOAl2O3xSiO2yH2O,.,C-S-H.[9],.,.C-S-H,24h,.,,,,7d,,.,,.,:1),OH-,OH-,Si-O-SiSi-O-Al.,,,,,,,.2).,,,,,,,,Na2O-Al2O3-SiO2-H2O.,[10],,C-S-H,,.,..3(500900).,,,[AlO6],,,.[11,12]:2(Si2O5,Al2(OH)4)5009002(Si2O5,Al2O3)2+4H2O,:(Si2O4,Al2O2)nH2ONaOH,KOHn(OH)2-Si-O-Al()-(OH)2n(OH)2-Si-O-Al()-(OH)2NaOH,KOH(Na,k)(-SiI|O-O-Al()|O-O-)n+3nH2Oorthosialate(Na,K)-poly(siatate)(Si2O2,Al2O3)+nSiO2+nH2ONaOH,KONn(OH)2-Si-O-Al()|(OH)2-O-Si-(OH)2n(OH)2-Si-O-Al()|(OH)2-O-Si-(OH)2NaOH,KON(Na,K)(-Si1|O-O-Al()|O-O-Si1|O-O-)n+nH2Oortho(sialatesiloxoe)(Na,K)-poly(siatlatesiloxo)49Davidovits[13],,:Mn[-(Si-O2)Z-Al-O]nwH2O,M,z123,n.Murat,eSilva[14,15],C-S-H(C4AH13C3AH6)(C2ASH8).[16]28dXRD,Ca(OH)2C-S-H(Na2OAl2O33SiO22H2O).,,,,..NaOH,Na-A.,,,,.,,.,,.,.[][1].()[J].,1996,24(2):209-215.[2].[J].,1997,2:46-47.[3]A.Palomo,M.W.Grutzeck,M.T.Blanco.Alkali-activatedflyashes.Acementforthefuture[J].CementandConcreteRe2search,1999,29:1323-1329.[4],,.[J].,2001,2:22-24.[5]Taleing,BandJ,Brandstetter.PresentStateandFutureofAlkali-activedSlagConcrete[A].FlyAsh,SilicaFume,andnationalpozzonsonConcrete,ProceedingsofThirdInternationalConference[C].Trondheim,Norway,1989.56-59.[6],.[J].,1997,19(4):53-60.[7]F.M..,,,.()[M].:,1980:594.[8],.[J].,1990,18(2):104-106.[9],.[J].,1998,3:3-7.[10]DellaM.Roy,WeiminJiang,M.R.Silsbee.Chloridediffusioninordinary,blended,andalkali-activatedcementpastesanditsrelationtootherproperties[J].CementandConcreteResearch,2000,30:1879-1884.[11]Davidovits,J.Geopolymers:Inorganicpolymericnewmaterials[J].Journalofthermalanalysis,1997,37:1633-1656.[12]Davidovits,J.PropertiesofGeopolymerCements[A].ProceedingsFirstInternationalConferenceonAlkalineCementandConcrete[C].KIEVUkraine,1994.131-149.[13]A.Palomo,M.W.Grutzeck,M.T.Blanco.Alkali-activatedflyashes[J].Acementforthefuture.CementandConcreteResearch,1999,29:1323-1329.[14],,.[J].,1997,5:8-14.[15]H.El-Didamony,K.A.Khalil,M.S.El-Attar.PHysicochemicalcharacteristicsoffiredclay-limestonemixes[J].Ce2mentandConcreteResearch,2000,30:7-11.[16],,.[J].,2000,2:21-28.ReactionMechanismsandtheProductsofThreeAlkali-activatedCementationsMaterialsCHENGLi(DepartmentofChemicalEngineering,JingmenTechnicalCollege,Jingmen,Hubei448000,China)Abstract:Alkali-activatedcementationsmaterialisatypicalgreenandenvironment-friendlymaterialwithverylowcost.Inthispaper,thereactionmechanismsandtheirreactionproductsofalkali-activatedslag,alkali-activatedflyashandalkali-activatedmetkaolinhavebeenanalyzedandreviewed.Keywords:alkali-activated;flyash;slag;metkaolinreactionmechanism;product59