Wang S.,Chongqing University |
Wang S.,Chongqing Key Laboratory of New Building Materials and Engineering |
Peng X.,Chongqing University |
Peng X.,Chongqing Key Laboratory of New Building Materials and Engineering |
And 5 more authors.
Journal Wuhan University of Technology, Materials Science Edition | Year: 2014
This study aimed to improve the hydraulic potential properties of the slag. Therefore, a method of dynamic hydrothermal synthesis was applied to synthesize calcium silicate hydrate. The phases and nanostructures were characterized by XRD, FTIR, TEM, and BET nitrogen adsorption. The influence of alkalinity of steel slag on its structures and properties was discussed. The experimental results show that, the main product is amorphous calcium silicate hydrate gel with flocculent or fibrous pattern with a BET specific surface area up to 77 m2/g and pore volume of 0.34 mL/g. Compared with low alkalinity steel slag, calcium silicate hydrate synthesized from higher alkalinity steel slag is prone to transform to tobermorite structure. © 2014 Wuhan University of Technology and Springer-Verlag Berlin Heidelberg.