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1、第31卷第9期东北大学学报(自然科学版)Vol31,No.92010年9月JournalofNortheasternUniversity(NaturalScience)Sep.2010超细矿渣粉对水泥水化的影响1221张!苹,李秋义,赵铁军,薛向欣(1.东北大学材料与冶金学院,辽宁沈阳!110004;2.青岛理工大学土木工程学院,山东青岛!266033)摘!!!要:通过X射线衍射试验,分析了超细矿渣的细度、取代量及龄期对水泥水化的影响试验结果表明:与基准浆体相比,掺入超细矿渣粉28d龄期水化样中Ca(OH)2晶体的衍射峰强度急剧下降,且消耗
2、Ca(OH)2晶体的数量与水化样龄期及超细矿渣粉取代量和细度密切相关掺P1000超细矿渣粉(比表面积实2测值1885m/kg)水泥水化速度非常快,3d时二次水化反应已基本完成,从3d到60dCa(OH)2的含量变化不明显;而且随着矿渣细度的增加和矿渣粉比表面积的增大,其吸收Ca(OH)2晶体的能力增强但随着水泥水化产物中Ca(OH)2晶体数量的减少,C3S和C2S等熟料矿物水化并未加快,这与一般规律不符,还需结合其他实验手段进一步分析关!键!词:超细矿渣粉;水化;物相分析;CSH凝胶;氢氧化钙中图分类号:X705!!!文献标志码:A!!!文章
3、编号:10053026(2010)09130004InfluenceofSuperfineSlagPowderontheHydrationofCement1221ZHANGPing,LIQiuyi,ZHAOTiejun,XUEXiangxin(1.SchoolofMaterials&Metallurgy,NortheasternUniversity,Shenyang110004,China;2.SchoolofCivilEngineering,QingdaoTechnologicalUniversity,Qingdao266033
4、,China.Correspondent:ZHANGPing,Email:zhangping@qtech.edu.cn)Abstract:Theinfluenceofthereplacementratio,finenessandageofsuperfineslagpowderonthepropertiesofcementpastewasinvestigatedbytestswithXRD.Theresultsshowedthatcomparedwiththereferenceslurry,thediffractionpeakintensit
5、yoftheCa(OH)2crystaldropssharplyinthe28dayhydratedcementsampleblendedwithsuperfineslagpowder,andthattheconsumedquantityofCa(OH)2isincloserelationwiththeageofhydratedcementsampleandthereplaementratioandfinenessofthepowder.ThehydrationrateofthecementpastewithP10002superfines
6、lagpowder(measuredspecificarea:1885m/kg)issoquickthatthesecondaryhydrationreactioncanbecompletedbasicallyjustin3days.NosignificantchangeisfoundinCa(OH)2diffractionpeakintensityintheperiodof360days.Thehydratedcement∀sabsorbabilityofCa(OH)2isenhancedwiththeincreasingslagfine
7、nessandslagpowder∀sspecificarea.However,thehydrationprocessesofsuchclinkersasC2SandC3SarenotshortenedwiththedecreasingquantityofCa(OH)2crystal,whichshowstheinconsistancywiththegeneralrulesandthereasonistobeinvestigatedfurtherwithothertestingmeans.Keywords:superfineslagpowde
8、r;hydration;phaseanalysis;CSHgel;Ca(OH)2为配制高性能混凝土,除必须采用高效减水贵,因此,粒化高炉矿渣或粉煤灰取代硅灰对混凝[
