粉煤灰水泥基材料的水化产物.pdf

　33 1 Vol.33, No .1 　2 0 0 5 1 JOURNAL OF THE CHINESE CERAMIC SOCIETY January, 2005 魏风艳, 吕忆农, 兰祥辉, 许仲梓 (, 　210009 ) 　: 、、、X 、、, 、、, 。 : , 。 , Ca(OH) n (Ca)/n (S )(C S H) 2 , n (Ca)/n (S )C S H , , 。 , , , , , 。 :;; :TQ 172;TU528　　:A 　　:0454 5648(2005)0 1 0052 05 HYDRATION PRODUCTS OF FLY ASH CEMENT-BASED MATERIAL WEI Fengyan, L Y inong, LAN Xiang hui, X U Zhongz i (College of Mater als Sc ence and Eng neer ng, Nanj ng Un vers ty of Technology, Nanj ng 　210009, Ch na) Abstract:Morphology, m crostructure, chem cal compos t on of hydrat on products, and pore structure for cement pastes w th d ff erent frac- t ons of fly ash were nvest gated by thermograv metry d fferent al scann ng calor metry, scann ng electron m croscope, transm ss on electron m croscope, energy d spers ve X-ray analys s, h gh-resolut on transm ss on electron m croscope, and mercury ntru s on poros metry.Eff ects of d fferent dosages of fly ash on character st cs of hydrat on products and pore structure were also d scussed.Results show that the chem cal com- pos t on of C S H gel can be mproved by dop ng n larger fract on of fly ash.In late of hydrate stage, fly ash reacts w th Ca(OH )and C 2 S H gel w th h gh molar rat o of CaO and S O to produce C S H gel w th lower molar rat o of CaO and S O , wh ch s called secondary 2 2 pozzolan c react on.The C S H