3无机胶凝材料2

1.•••2.•6•••18761949100195228019851.419882.0319954.7619964.9200713.6•(•(Pozzolana)•1756JohnSmeatonEddystone(Eddystone•18241021LeedsJosephAspdinPortlandCement•••••4000CommonPortlandCement1.GB175——2007Commonportlandcement2.•Portlandcement•OrdinaryPortlandCement•PortlandSlagCement•PortlandPozzolanCement•PortlandFlyashCement•CompositePortlandCement100————————955——————95——————5809552050802050——————30505070——————6080——2040————6080————2040——60802050““””()()()()⎯⎯⎯⎯⎯⎯→⎯⎯⎯→⎯⎪⎪⎭⎪⎪⎬⎫⎪⎪⎩⎪⎪⎨⎧⎯⎯→⎯⎪⎭⎪⎬⎫⎪⎩⎪⎨⎧⇓COFeOAlSiOCaOOFeOAlSiOCaO014503232232322•2.2~2.75mh8.5~10m——(+)•3~4mL80~145m5%————•10000/,8600t/d540,21300kW•1971CaCO3•——30~40%150%50%100~200()()()()()()()()⎪⎪⎩⎪⎪⎨⎧⋅⋅⋅⋅⋅⎯⎯→⎯⎪⎪⎭⎪⎪⎬⎫AFCOFeOAlCaOACOAlCaOSCSiOCaOSCSiOCaOFOFeAOAlSSiOCCaOC24323233222321450323243230•(%)(%)CaO62~67C3S37~60SiO219~24C2S15~37Al2O34~7C3A7~15Fe2O32~5C4AF10~18()()()()()()⎪⎪⎪⎩⎪⎪⎪⎨⎧••⋅⋅••⋅⋅+−−+⎪⎪⎪⎭⎪⎪⎪⎬⎫6363124332~314343233AHCCFHAHCAFmHCaSOACAFtHCaSOACCHHSCAFCACSCSC•C-S-H70%CH20%7%C3SC2SC3AC4AFg/cm33.253.283.043.77•C3AC3SC4AFC2S•C3AC3SC4AFC2S•——C3S+C3A——C3S+C3AC2S——C3SC4AFC3AC3SC2SMPaC3AC4AF0328a)b)c)d)•--•(•C-S-H(70%••••••GB175—2007300m2kg•80m1045m30•45min390min**%•POPSPPPFPC45min600min——()•CaOMgO•AFt——3CaO·Al2O3·3CaSO4·32H2O•——CaOf—CaO•MgOf—MgO•f—CaO•5.0%3.5%•1:30.5GB/T17671—19993d28d•4040160mm•2010C•3d28dGB175—2007••42.5#52.5#62.5#•42.5R#52.5R#62.5R#•Na2O+0.685K2O0.60%•–P·100–P·95•1•234•–5–6Ca(OH)2–7••——50kg•QS•——••••––•Ca(OH)2•••Ca(OH)2•Ca(OH)2Ca(OH)2Ca(OH)2•Ca(OH)2()•Ca(OH)2———AFt1.54CaO·Al2O3·12H2O+3CaSO4+20H2O3CaO·Al2O3·3CaSO4·31H2O+Ca(OH)2Ca(OH)2Ca+++SO4=CaSO4·2H2O•MgSO4+Ca(OH)2+H2OCaSO4·2H2O+Mg(OH)2•MgCl2+Ca(OH)2CaCl2+Mg(OH)2•Mg(OH)2——•CaCl2———•MgSO4———pH7Ca(OH)2+CO2+H2O==CaCO3+2H2OCaCO3+CO2+H2O==Ca(HCO3)2•Ca(HCO3)2•Ca(OH)2Ca(HCO3)2Ca(OH)2.HR==H++R-RCl-SO4=)Ca(OH)2==2OH-+Ca++(CaR)H+pHR•——Ca(OH)25.•ƒC3SƒC3Aƒ•••••**•——••*SiO2*SiO2Al2O3*•••SiO2Al2O3•()()()()⎪⎪⎩⎪⎪⎨⎧∗−−∗⇒⎪⎪⎭⎪⎪⎬⎫AFmAFtHSCOHCaOHCaOAlSiO22322••••C—S—H•⎪⎪⎩⎪⎪⎨⎧⎯⎯→⎯⎪⎪⎭⎪⎪⎬⎫•——P·O(OrdinaryPortlandCement)•520•80m10.0%•45min600min•3d28d42.5#52.5#42.5R#52.5R#*••P·P·•3dP·P·•1.•——P·S·AP·S·BPortlandSlagCement)•P·S·A2050P·S·B5070•80m10.0%•45min600min••6.0%4.0%•32.5#42.5#52.5#32.5R42.5R#52.5R#*3d28d*2.——“”PortlandCementCHCH“”()()()()⎪⎩⎪⎨⎧−−⎯⎯⎯→⎯⎪⎪⎪⎪⎪⎭⎪⎪⎪⎪⎪⎬⎫⎪⎪⎪⎪⎪⎩⎪⎪⎪⎪⎪⎨⎧−−−−⎯⎯⎯→⎯7HSCASOHCaCFHAFmAFtHACHSC2PortlandCement•C-S-HC/SCa(OH)2•Ca(OH)2SiO2Al2O3C-S-HAFtAFmC-A-H3.••C3SC3A•CHCAH3.•CH•••1.•——P·P(PortlandPozzolanCement)•2040•2.3.••C3SC3A•CH••CHCAHAl2O3•••1.•——P·FPortlandFlyashCement)•2040•2.3.•••1.•——P·CCompositePortlandCement•2050•2.3.GB/T3183-2003•——M•*4.0%*0.08mm10%*60min;12hr*80•M12.5#M22.5#•••Portlandcementforroad(GB13693—2005)0~10%•P·R•C3A5.0%C4AF16.0%1.0%1.8%•*5.0%3.5%*C3A5.0%*C4AF16.0%*300m2/kg~450m2/kg*1.5hr10hr*•*280.10%*JC/T42128d3.00kg/m2*3d28d3d28d32.53.56.516.032.542.54.07.021.042.552.55.07.526.052.53d3d28d28d3d3d28d28d32.5----3.5----6.5----16.0----32.542.53.54.06.57.017.021.042.542.552.54.05.07.07.523.026.052.552.5•*Fe2O30.5%*Fe2O33%~4%*Fe2O30.45%~0.7%,*Fe2O30.35%~0.40%•••GB/T20152005•——•32.5#42.5#52.5#•——87(JC/T870-2000)••27.5#32.5#42.5#••(GB199-90)•——1d3d325#375#425#•——C3SC3A60%~65%450m2/kg•——P·O•——•——Ca(OH)2C3SC3A•C3S55.0%C3A5.0%32.5GB748——2005•C3S50.0%C3A3.0%42.5GB748——2005•——⎧⎪⎪⎪⎪⎨⎪⎪⎪⎪⎩•CAAluminateCements•——(Al2O340%~75%*——*——•CaO·Al2O3——CA*•CaO·2Al2O3——CA2*•2CaO·Al2O3·SiO2C2AS•12CaO·7Al2O3C12A7•2CaO·SiO2——C2S•CA2——CA•C12A7——•C2AS——•CAH10C2AH8Al(OH)3•——CAH10C2AH8C3AH63(CAH10C3AH6+2(Al2O3·3H2O)+18H2Omol1()0.254()0.22()0.549()*5*•GB201——2000*Al2O3CA-50CA-60CA-70CA-801d3dMPaMPa6h1d3d28d6h1d3d28dCA-502014050——3.015.56.5——CA-60——204585——2.55.010.0CA-70——3040————5.06.0——CA-80——2530————4.05.0——1•*180%~90%*170%~80%25%~50%4~6hr*•*Ca(OH)2*——9000C70%13000C53%*——AFtAFm***500C7d14d*W/C0.40.35*150C250C