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Synthesis of calcium silicate hydrate based on steel slag with various alkalinities

  • Metallic Materials
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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.

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Authors and Affiliations

  1. College of Material Science and Engineering, Chongqing University, Chongqing, 400045, China

    Shuping Wang  (王淑萍), Xiaoqin Peng  (彭小芹), Jianqiang Geng & Bin Li

  2. Chongqing Key Laboratory of New Building Materials and Engineering, Chongqing, 400045, China

    Shuping Wang  (王淑萍), Xiaoqin Peng  (彭小芹), Jianqiang Geng & Bin Li

  3. Shandong Provincial Academy of Building Research, Jinan, 250000, China

    Kaiyu Wang

Authors
  1. Shuping Wang  (王淑萍)
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  2. Xiaoqin Peng  (彭小芹)
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  3. Jianqiang Geng
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  4. Bin Li
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  5. Kaiyu Wang
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Corresponding author

Correspondence to Xiaoqin Peng  (彭小芹).

Additional information

Funded by the National Natural Science Foundation of China (No. 50972171), the Project of International Science and Technology Cooperation (No.2009DFR50450), and the Large Equipment Fund of Chongqing University (No.2012061511)

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Wang, S., Peng, X., Geng, J. et al. Synthesis of calcium silicate hydrate based on steel slag with various alkalinities. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 29, 789–794 (2014). https://doi.org/10.1007/s11595-014-0998-0

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  • DOI: https://doi.org/10.1007/s11595-014-0998-0

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