EFFECT OF DEFFERENCES OF Al OR CURING DEGREE ON CRYSTAL OF TOBERMORITE

Abstract

The purpose of this study is to consider the effects of the differences of Al or curing temperature on the crystal of tobermorite. The samples were synthesized to add gehlenite or γ-Al₂O₃ and to cure at several temperature conditions which were under 80℃. As a result, 1.4nm tobermorite was generated by curing at 40℃ for 28days. In addition, there was the possibility that 1.1nm tobermorite which was replaced Si by Al was generated at 60℃ due to the addition of Al. Furthermore, the replacement site of Al would be changed Q_2b into Q₃ by the crystallization of C-（A）-S-H to 1.1nm tobermorite, and the difference of the source of Al caused the difference of amount of Al substitution.