Advertisement

Journal of Thermal Analysis and Calorimetry

, Volume 128, Issue 1, pp 79–87 | Cite as

Study on the hydration products of C3S prepared by sol–gel method

  • Yanchang Chen
  • Chunli Zhang
  • Peng Song
  • Qi Wang
  • Chao Huang
  • Shufen Li
Article
  • 195 Downloads

Abstract

Tricalcium silicate (C3S) mineral was prepared by sol–gel method, using tetraethyl orthosilicate as silicon source, Ca(NO3)2·4H2O as calcium source, EtOH as cosolvent and saltpeter solution as catalyst. The percentage of f-CaO of C3S is less than 0.18 %. C3S samples were hydrated with a w/b ratio 20 at room temperature. SEM results show calcium silicate hydrate (C–S–H) is a tightly coupled laminated structure within hydration 12 h and grew acicular fiber at later ages. The mean C/S ratios of C–S–H remain around 1.55 at 28 days. Calcium hydroxide (CH) occurs the directional growth toward the (001) crystal plane. XRD results show the width of CH diffraction peak got broadened with the increase in hydration ages and the crystallinity of C3S has dropped. Bound water in C–S–H at different ages of hydration supports the assumption that the hydration rate of C3S at early stage is much faster than that at late ages.

Keywords

Hydration products C3Sol–gel method C–S–H Directional growth 

Notes

Acknowledgements

This work is supported by Science and Technology Development Plan of Shandong Province (2013GGB01156) and Natural Science Foundation of Shandong Province, China (ZR2015EM019). We also thank Program for Scientific Research Innovation Team in Colleges and Universities of Shandong Province.

References

  1. 1.
    Yang NR. Progress in the investigation of structural model C–S–H gel. J Nanjing Univ Chem Technol. 1998;20(2):78–85.Google Scholar
  2. 2.
    Singh LP, Bhattacharyya SK. Studies on early stage hydration of tricalcium silicate incorporating silica nanoparticles: partI. Constr Build Mater. 2015;74:278–86.CrossRefGoogle Scholar
  3. 3.
    Cong X, Kirkpatrick RJ. Effects of the temperature and relative humidity on the structure of C–S–H gel. Cem Concr Res. 1995;25(6):1237–45.CrossRefGoogle Scholar
  4. 4.
    Thomas JJ. A new approach to modeling the nucleation and growth kinetics of tricalcium silicate hydration. J Am Ceram Soc. 2007;90(10):3282–8.CrossRefGoogle Scholar
  5. 5.
    Thomas JJ, Jennings HM, Chen JJ. Influence of nucleation seeding on the hydration mechanisms of tricalcium silicate and cement. J Phys Chem C. 2009;113:4327–34.CrossRefGoogle Scholar
  6. 6.
    Goñi S, Guerrero A. Study of alkaline hydrothermal activation of belite cements by thermal analysis. J Therm Anal Calorim. 2010;99:471–7.CrossRefGoogle Scholar
  7. 7.
    Laudisio G, Branda F. Sol–gel synthesis and crystallisation of 3CaO·2SiO2 glassy powder. Thermochim Acta. 2001;370:119–24.CrossRefGoogle Scholar
  8. 8.
    Dovàl M, Palou M, Mojumdar SC. Hydration behavior of C2S and C2AS nanomaterials, synthetized by sol–gel method. J Therm Anal Calorim. 2006;86:595–9.CrossRefGoogle Scholar
  9. 9.
    Roy DM, Oyefesobi SO. Preparation of very active Ca2SiO4 powder. J Am Ceram Soc. 1977;60:178–80.CrossRefGoogle Scholar
  10. 10.
    Wang Y, Thomson WJ. Kinetic studies of tricalcium silicate formation from sol–gel precursors. Chem Mater Sci Eng. 1996;31:1319–25.Google Scholar
  11. 11.
    Jennings HM. A model for the microstructure of calcium silicate hydrate in cement paste. Cem Concr Res. 2000;30:101–16.CrossRefGoogle Scholar
  12. 12.
    He YJ, Zhao XG, Lu LN. Effect of C/S ratio on morphology and structure of hydrothermally synthesized calcium silicate hydrate. J Wuhan Univ Technol Mater Sci Ed. 2011;26(4):770–3.CrossRefGoogle Scholar
  13. 13.
    Ding QJ, Hu CG. Effect of curing regime on polymerization of C-S–H in hardened cement pastes. J Wuhan Univ Technol Mater Sci Ed. 2013;28(4):715–20.CrossRefGoogle Scholar
  14. 14.
    Gallucci E, Zhang X. Effect of temperature on the microstructure of calcium silicate hydrate (C–S–H). Cem Concr Res. 2013;53:185–95.CrossRefGoogle Scholar
  15. 15.
    He Z, Liang WQ, Wang L, Wang J. Synthesis of C3S by sol–gel technique and its features. J Wuhan Univ Technol Mater Sci Ed. 2010;25(1):138–41.CrossRefGoogle Scholar
  16. 16.
    Chen HX, Wang PM. Preparation of C2S Powders by sol–gel method. Mater Sci Eng. 2000;18(2):53–6 (Chinese).Google Scholar
  17. 17.
    Chen HX. Study on Preparation of cement clinker minerals by sol gel method and hydration process. Shanghai: Tongji University of Material Science and Engineering; 2003.Google Scholar
  18. 18.
    Singh LP, Bhattacharyya SK, Shah SP, Mishra G, Sharma U. Studies on early stage hydration of tricalcium silicate incorporating silica nanoparticles: part II. Constr Build Mater. 2016;102(1):943–9.CrossRefGoogle Scholar
  19. 19.
    Kumar A, Bishnoi S, Scrivener KL. Modelling early age hydration kinetics of alite. Cem Concr Res. 2012;42:903–18.CrossRefGoogle Scholar
  20. 20.
    Bullard JW, Jennings HM, Livingston RA, Nonat A, Scherer GW, Schweitzer JS, Scrivener KL, Thomas JJ. Mechanisms of cement hydration. Cem Concr Res. 2011;41:1208–23.CrossRefGoogle Scholar
  21. 21.
    Juilland P, Gallucci E, Flatt R, Scrivener K. Dissolution theory applied to the induction period in alite hydration. Cem Concr Res. 2010;40:831–44.CrossRefGoogle Scholar
  22. 22.
    Tadros ME, Skalny J, Kalyoncu RS. Early hydration of tricalcium silicate. J Am Ceram Soc. 1976;59(7–8):344–7.CrossRefGoogle Scholar
  23. 23.
    Aditya K, Shashank B, Scrivener KL. Modelling early age hydration kinetics of alite. Cem Concr Res. 2012;42:903–18.CrossRefGoogle Scholar
  24. 24.
    Aouni EEl. The effect of C3S on the early hydration of C3A. J Therm Anal Calorim. 1995;45:1349–57.CrossRefGoogle Scholar
  25. 25.
    Tsivilis S, Kakali G, Chaniotakis E, Souwaridou A. A study on the hydration of Portland limestone cement by means of TG. J Therm Anal Calorim. 1998;52:863–70.CrossRefGoogle Scholar
  26. 26.
    Xu ZH, Zhou ZH, Du P, Cheng X. Effects of nano-silica on hydration properties of tricalcium silicate. Constr Build Mater. 2016;125:1169–77.CrossRefGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2016

Authors and Affiliations

  • Yanchang Chen
    • 1
  • Chunli Zhang
    • 1
  • Peng Song
    • 1
  • Qi Wang
    • 1
  • Chao Huang
    • 1
  • Shufen Li
    • 1
  1. 1.Shandong Provincial Key Laboratory of Preparation and Measurement of Building MaterialsUniversity of JinanJinanChina

Personalised recommendations