Skip to main content
SpringerLink
Log in

Gypsum content determination in Portland cements by thermogravimetry

  • Published:
Journal of Thermal Analysis and Calorimetry Aims and scope Submit manuscript

Abstract

Gypsum quantitative determination in cements may be done from their thermogravimetric analysis (TG) data, which uses the mass of the water released from its gypsum dehydration during cement analysis, to determinate its content stoichiometrically. Depending on the operational conditions used to mill the gypsum with clinker, its partial dehydration may occur, which leads to unreal results when only unhydrated cement TG data are used. To solve this problem, TG analysis of the 1-h paste of respective cement must be done on respective initial cement mass basis. The method was applied to four different classes of Portland cements, showing that for all of them, the application of the method was needed to avoid erroneous determinations. As mineral composition data show that the cements have other sulfated phases, different from gypsum and its dehydration phases, the total cement SO3 content cannot be used directly to quantify gypsum. However, using the present suggested thermogravimetric method, the original gypsum content can be determined, which also estimates and includes the amount which was consumed to form ettringite during the first hour of hydration.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

  1. Hewlett PC. Lea’s chemistry of cement and concrete, 4th edn. London: Arnold; 1998.

    Google Scholar 

  2. Taylor HFW. Cement chemistry. 2nd ed. Langholm: Thomas Telford; 1997.

    Book  Google Scholar 

  3. Dweck J, Büchler MP, Coelho ACV, Cartledge FK. Solidification/stabilization of a tannery waste with blended cement and wyoming bentonite. J Environ Sci Health. 2000;A35(5):715–40.

    Article  CAS  Google Scholar 

  4. Dweck J, Ferreira da Silva PF, Aderne RS, Büchler MP, Cartledge FK. Evaluating cement hydration by non-conventional DTA—an application to waste solidification. J Therm Anal Calorim. 2003;71:821–7.

    Article  CAS  Google Scholar 

  5. Dweck J, Aderne RS. The effect of the presence of pozzolanic material in the solidification of a tannery waste. In: Proceedings of III seminar on pollution prevention and control DEQ/EPUSP, São Paulo, 2007. p. 20–29 (in Portuguese).

  6. Silva DM, Alberoni VG, Dweck J, Yokoyama L. A thermal analysis study of the stabilization/solidification of a waste containing aluminum. In: Proceedings of II seminar on pollution prevention and control DEQ/EPUSP, São Paulo, 2005. p. 1–7 (in Portuguese).

  7. Dweck J, Pinto AP, Büchler PM. Study of a Brazilian spent catalyst as cement aggregate by thermal and mechanical analysis. J Therm Anal Calorim. 2008;92(1):121–7.

    Article  CAS  Google Scholar 

  8. Cunha ALC, Gonçalves JP, Büchler PM, Dweck J. Effect of metakaolin pozzolanic activity in the early stages of cement type II paste and mortar hydration. J Therm Anal Calorim. 2008;92(1):115–9.

    Article  Google Scholar 

  9. Melchert MBM, Viana MM, Lemos MS, Dweck J, Büchler PM. Simultaneous solidification of two catalyst wastes and their effect on the early stages of cement hydration. J Therm Anal Calorim. 2011;105(2):625–33.

    Article  CAS  Google Scholar 

  10. Dweck J, Büchler MP, Coelho ACV, Cartledge FK. Hydration of a Portland cement blended with calcium carbonate. Thermochim Acta. 2000;346:105–13.

    Article  CAS  Google Scholar 

  11. Dweck J, Souza Santos P. A prototype system for thermogravimetric analysis. Cerâmica. 1989;35(39):169–75 (in Portuguese).

    CAS  Google Scholar 

  12. Angeleri FB, Cardoso SR, Souza Santos P. Gypsum characterization. Ceramica. 1983;29(160):93–8 (in Portuguese).

    CAS  Google Scholar 

  13. Blaine R, Dunn J, Patel J, Sills I. Gypsum DSC. TA Hotline. 1996;1:2.

    Google Scholar 

  14. Syndicat National des Industries de Platre. Le Platre—Physico-chemie, Fabrication et Emplois, Paris: Eyrolles; 1982. p. 84.

  15. Cunha ALC, Gonçalves JP, Cartledge FK, Toledo Filho RD, Fairbairn EMR, Dweck J. Evaluation of the metakaolin pozzolanic reactivity in cement pastes. Mater Sci Forum. 2008;591–593:827–32.

    Article  Google Scholar 

  16. Dweck J. Gypsum molds—a micro-processed system to determinate the Plaster of Paris hydration time and the water absorption rate. In: Proceedings of 39th Braz. Ceram. Congress. Águas de Lindóia, Brazil 1995. p. 1052–1057 (in Portuguese).

  17. Neves A Jr, ToledoFilho RD, Fairbaim EMR, Dweck J. Early stages hydration of high initial strength Portland cement, Part I. Thermogravimetric analysis on calcined mass basis. J Therm Anal Calorim. 2012;108:725–31.

    Article  CAS  Google Scholar 

  18. Dweck J, Melchert MB, Viana MM, Cartledge FK, Büchler PM. Importance of quantitative thermogravimetry on initial cement mass basis to evaluate the hydration of cement pastes and mortars. J Therm Anal Calorim. 2013;111(3):1–10.

    Google Scholar 

  19. Neves Junior A, Toledo Filho RD, Fairbairn EMR, Dweck J. CO2 sequestration by high initial strength Portland cement pastes. J Therm Anal Calorim 2013; 113:1–8.

    Article  CAS  Google Scholar 

Download references

Acknowledgements

The authors thank the Brazilian National Research Council—CNPq, and the Chemistry Department of the Louisiana State University.

Author information

Authors and Affiliations

  1. Thermal Analysis Laboratory, Chemical School, Federal University of Rio de Janeiro, Bloco E do Centro de Tecnologia, Sala E-206, Cidade Universitária, Rio de Janeiro, RJ, CEP 21 949-900, Brazil

    Dweck Jo

  2. Cement-Based Materials Characterization Laboratory, Civil Engineering Department, Coppe – Federal University of Rio de Janeiro, Box 68506, Rio de Janeiro, RJ, CEP 21945-970, Brazil

    Rosangela S. Leonardo, Oscar A. Mendoza Reales & Romildo D. Toledo Filho

  3. Chemistry Department, Louisiana State University, Baton Rouge, LA, USA

    Frank K. Cartledge

Authors
  1. Dweck Jo
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Rosangela S. Leonardo
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Frank K. Cartledge
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Oscar A. Mendoza Reales
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Romildo D. Toledo Filho
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Dweck Jo.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Jo, D., Leonardo, R.S., Cartledge, F.K. et al. Gypsum content determination in Portland cements by thermogravimetry. J Therm Anal Calorim 123, 1053–1062 (2016). https://doi.org/10.1007/s10973-015-5078-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10973-015-5078-y

Keywords

Search

Navigation