钢铁渣粉对混凝土中钢筋的保护作用朴星君

100088、。。。。PROTECTIVEEFFECTOFGROUNDIRONANDSTEELSLAGONREINFORCEDCONCRETEPiaoXingjunZhuGuilinSunShushanCentralResearchInstituteofBuildingandConstructionCo．LtdMCCGroupBeijing100088ChinaAbstractSteelslagandthegranulatedblastfurnaceslagareproducedintheprocessofsteelandironsmelting．Theyhavethehydraulicitycementitiouspropertywhichissimilartothatofthecementclinkersotheyareusedasconcreteadmixtures．ThegroundironandsteelslagiscomposedbygroundsteelslagandgroundgranulatedblastfurnaceslagGGBSwithacertainproportion．ThispowdercankeepadvantageofgroundsteelslagandGGBSandmakeupforashortcomingwhenbeingmixed．Sotheyhaveverygoodprotectiveeffectonreinforcedconcrete．Keywordsgroundsteelslaggroundgranulatedblastfurnaceslagconcretesteelcorrosion0。、、、。。。、。、。。、。。、、。。。。1-4。1。、。1920116293DOI:10.13205/j.hjgc.2011.03.003。。、。1.1CO2。pH12.5～13pH。1.251。。2。、、、。。56①②③④⑤。。3～6、、。22.12.1.13。。YeauKim7。RCP。25%、40%、55%。28d40%、55%ASTMC1202“”。YeauKim。25%、40%、55%56d40℃3%NaCl3d60℃4d30。20mm58%25%32%40%18%55%11%。。lkerBTAhmetRB825%0.5%NaCl90d。。。CaOH2。50%。2.1.2CaO、SiO2、Al2O3、FeO、Fe2O3、MgO、MnO、P2O5、f-CaO。TiO2、V2O5。29201162931600～1700℃1400～1460℃。9。3CaO·SiO22CaO·SiO250%3CaO·AlFe2O33CaO·SiO2+nH2O→2CaO·SiO2n－1H2O+CaOH22CaO·SiO2+nH2O→CaO·SiO2n－1H2O+CaOH2CaO+H2O→CaOH23CaO·AlFe2O3·6H2O+3CaSO4·2H2O+19H2O→3CaO·AlFe2O3·3CaSO4·31H2O1.24～4.24。。。=nCaO/nSiO2+P2O5。400m2/kg42.57∶3110。1/MPa/%7d28d7d28d134.653.810010022.6822.145.6648532.0221.839.4637341.6921.437.96270pH。C5S6H5TobormorlitCSHB50%。C3S、C2SCaOH2CaOH2pH。1110%28d。20%。2.1.3。。。C2ASC2MS2CO2CaCO3。1600～1700℃C2S、C3S。。、、。2.2pH2.2.1。400±5m2/kg。400±5m2/kg。42.5。2.2.2ex-situleachingpH12。0.08mm10.00g10。2hpH。2.2.3、30%、30%、50%、70%30%m∶m3920116293=2∶8。1372860100140dpH。2。2pH1d3d7d28d60d100d140d12.74512.68812.69612.68612.67712.65812.62830%12.69712.65412.66912.65512.64212.62612.60430%12.63912.58112.61612.57312.60812.57012.57850%12.58012.52112.58212.51912.53812.51712.53570%12.51212.47912.49312.47812.47312.46612.45630%12.69112.63512.62012.64012.63212.60212.5852.2.42pHpH。pH2pHpH。pH。1dpH12.74530%、50%、70%pH12.63912.58012.51270%pH12.5。pH。pH。30%、30%30%pHpH。pH＞30%＞30%＞30%。。。pHpH。pHpH。3111.5。2。pH。3。pH。4pH。。。1．“”C//．2009．2．J．2009636-38．3．J．1996141-44．10249201162932、3612IKmax＜20MPa·m/sII20MPa·m/s＜Kmax＜30MPa·m/s。350g/m318MPa·m/s4400℃。220。2040、。20502080。11、、。。。7。。3、。400℃。1．1999J．199822678-82．2UnitedStatesChemicalSafetyandHarzardInvestigationBoardEB/OL．2000-10-27．http//．esdjournal．com/static/autofire/Richmond_CA_files/Richmond_CA．htm．3NifukuaMTsujitabHFujinobK．AstudyontheignitioncharacteristicsfordustexplosionofindustrialwastesJ．JournalofElectrostatics200563455-462．4．J．20083481-3．5．J．200521621-25．6EckhoffR．DustexplosionsintheprocessindustriesM．3rdedition．BurlingtonG[e-mail]2010－12－15櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅櫅944J．2002541-42．5．M．2009.6．M．2007.7KyongYunYeauEunKyumKim．Anexperimentalstudyoncorrosionresistanceofconcretewithgroundgranulateblast－furnaceslagJ．CementandConcreteResearch20053571391-1399．8lkerBekirTopuAhmetRaifBoga．Effectofgroundgranulateblast-furnaceslagoncorrosionperformanceofsteelembeddedinconcreteJ．MaterialsandDesign20103173358-3365．9．—J．1996644-46．10．J．2010945-48．11．J．200[e-mail]2010－11－2920120116293