JCI Annual Convention in HAKATA
Jul 6 - Jul 8, 2016FUKUOKA CONVENTION CENTER
JCI Annual Convention in HAKATA
Jul 6 - Jul 8, 2016FUKUOKA CONVENTION CENTER
[1032]INFLUENCES OF NANO-TiO2 PARTICLES ON ALTERATION OF MICROSTRUCTURE OF HARDENED CEMENT
Ryo KURIHARA1, Ippei MARUYAMA1(1.名古屋大学)
Keywords:
calcium hydroxide,calcium silicate hydroxide,drying shrinkage strain,hydration,TiO2 nanoparticle,X ray diffraction
This paper reports the influence of nano-TiO2 given to alteration of the microstructure of hardened cement pastes with drying process. Cement pastes containing 3% nano-TiO2 (in addition outside split) by mass of cement were prepared. In hydration process, nano-TiO2 was delayed a long-term hydration of belite (C2S), and suppressed the production of Ca(OH)2. In drying process, the TiO2 added paste shrunk larger than non-added paste. It was suggested that this phenomenon may be due to a decrease in Ca(OH)2 production by the addition of nano-TiO2.