EVALUATION OF CRYSTAL STRUCTURE OF ZEOLITE ─ C-A-S-H SERIES

Abstract

In this study, we attempted to evaluate the structure of C-A-S-H, whose structure is unknown, from the differences in the products and the characteristics of their formation under different conditions by simultaneous formation of C-A-S-H and zeolite, which have many structural similarities. phase in the liquid phase under varying amounts of Si, Al, Ca, and Na, and to evaluate the structure of C-A-S-H. The results showed that zeolitic products were mainly observed under the zeolite-dominated condition with high Al content, but the amount of products decreased in proportion to the Ca content, indicating the possibility of C-A-S-H formation. On the other hand, in the case of the C-A-S-H dominant condition with high Si content, the formation of C-A-S-H was observed even with a small amount of Ca, and the formation of C-A-S-H, which is close to the crystal structure of tobermorite, tended to become dominant as the amount of Ca was increased.