Synthesis and calorimetric study of hydration behavior of sulfate-rich belite sulfoaluminate cements with different phase compositions

  • Yan Shen
  • Xuepiao Li
  • Xi Chen
  • Wei Zhang
  • Dingyi Yang
Article
  • 3 Downloads

Abstract

Sulfate-rich belite sulfoaluminate (BSA) cements with varied phase compositions were synthesized in this work. The presence of sulfate in the clinker is in the form of anhydrite in addition to calcium sulfoaluminate. The aim of this paper is to study the effect of mineral composition on cement properties. Experimental results indicate that the improvement of early-age strengths mainly depends on the hydration of ye’elimite. The increase of ferrite content promotes the compressive strength after 7 days of hardening, but has adverse effect on cement strength at early ages. The optimum content of ferrite is between 10 and 20% for BSA cement containing approximately 35% ye’elimite. Different amounts of natural gypsum were added to the synthetic sulfate-rich BSA clinkers and we found that anhydrite formed in BSA clinkers can replace natural gypsum to facilitate the hydration of ye’elimite.

Keywords

Sulfate-rich belite sulfoaluminate cement Mineral composition Mechanical property Hydration 

Notes

Acknowledgements

The authors gratefully acknowledge the financial support from China Postdoctoral Science Foundation (2017M611924) and Natural Science Foundation of Jiangsu Province (BK20170505). The study also gains support from Project funded by College Natural Science Research of Jiangsu Province (17KJB560013).

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Yan Shen
    • 1
  • Xuepiao Li
    • 1
  • Xi Chen
    • 1
  • Wei Zhang
    • 1
  • Dingyi Yang
    • 1
  1. 1.College of Civil Science and EngineeringYangzhou UniversityYangzhouChina

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