|
|||||
|
|
Synthesis of calcium silicate hydrate based on steel slag with various alkalinities |
|
| Authors: | Shuping Wang Xiaoqin Peng Jianqiang Geng Bin Li Kaiyu Wang |
| Affiliation: | 1. College of Material Science and Engineering, Chongqing University, Chongqing, 400045, China 2. Chongqing Key Laboratory of New Building Materials and Engineering, Chongqing, 400045, China 3. Shandong Provincial Academy of Building Research, Jinan, 250000, China |
| Abstract: | 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. |
| Keywords: | calcium silicate hydrate hydrothermal synthesis steel slag alkalinity |
| 本文献已被 CNKI 维普 SpringerLink 等数据库收录！ | |