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Hydration kinetics of phosphorus slag-cement paste

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Abstract

Hydration characteristics of Portland cement paste with phosphorus slag powder incorporated and hydration kinetics was investigated with SEM, X-ray diffraction, DTA-TG and calorimeter II 80. Results showed that phosphorus slag powder could reduce total amount of hydration products yet had little influence on the type of hydration products. The total amount of heat of hydration was decreased by 49.11% and the final setting was postponed by 2.28 h when phosphorus slag powder substituted 35% Portland cement by mass. The accelerating stage of this composite paste was controlled by catalysis, decreasing stage controlled by both catalysis and diffusion while stabilizing stage by diffusion alone. Hydration resistance and activation energy were reduced and hydration speed was accelerated.

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Authors and Affiliations

  1. School of Civil Engineering, Wuhan University, Wuhan, 430070, China

    Xia Chen  (陈霞), Kunhe Fang & Hua Peng

  2. Department of Mateials and Structure, Changjiang River Scientific Research Institute, Wuhan, 430010, China

    Xia Chen  (陈霞) & Huaquan Yang

Authors
  1. Xia Chen  (陈霞)
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  2. Kunhe Fang
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  3. Huaquan Yang
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  4. Hua Peng
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Corresponding author

Correspondence to Xia Chen  (陈霞).

Additional information

Funded by the National Natural Science Foundation of China(No. 50539010), China Central Special Non-profit Research Funds for Institutes (Nos.200901066 and YWF090)

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Chen, X., Fang, K., Yang, H. et al. Hydration kinetics of phosphorus slag-cement paste. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 26, 142–146 (2011). https://doi.org/10.1007/s11595-011-0186-4

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  • DOI: https://doi.org/10.1007/s11595-011-0186-4

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