The synthesis and hydration of ternesite, Ca5(SiO4)2SO4

Solon Skalamprinos* (Corresponding Author), Gabriel Jen, Isabel Galan, Mark Whittaker, Ammar Elhoweris, Fredrik Glasser

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The hydration and strength evolution of two multi-phase ternesite-based cements with 15 and 29 wt% ternesite are reported. The synthesis and hydration properties of single phase ternesite, nominally Ca5(SiO4)2SO4, are also reported including both chemically-pure ternesite and preparations doped with sodium, potassium, phosphorous, magnesium, manganese, strontium, zinc and titanium oxides. Hydration of the samples at 25 °C was studied by calorimetry and quantitative X-ray diffraction. Unconfined compressive strength development was determined for up to 1 year. Single-phase chemically activated ternesite hydrated rapidly at 25 °C achieved compressive strengths of ≈30 and ≈65 MPa at 28 and 90 days respectively, with C-S-H and gypsum as hydration products. The multi-phase ternesite-based cements reached 7 day strengths of ≈30 MPa. It is concluded that ternesite reacts with water, exhibiting strength gain. The future of calcium sulfoaluminate and sulfosilicate cements is discussed and it is suggested that a considerable, and as yet unrealised scope exists for simultaneously optimising cementing properties while lowering production costs and reducing CO2 emissions.

Original languageEnglish
Pages (from-to)27-40
Number of pages14
JournalCement and Concrete Research
Volume113
Early online date20 Jul 2018
DOIs
Publication statusPublished - 30 Nov 2018

Fingerprint

Hydration
Cements
Compressive strength
Zinc Oxide
Calcium Sulfate
Strontium
Titanium oxides
Gypsum
Calorimetry
Manganese
Zinc oxide
Magnesium
Potassium
Calcium
Sodium
X ray diffraction
Water
Costs

Keywords

  • Calcium sulfosilicate
  • Hydration
  • Synthesis
  • Ternesite

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

Cite this

Skalamprinos, S., Jen, G., Galan, I., Whittaker, M., Elhoweris, A., & Glasser, F. (2018). The synthesis and hydration of ternesite, Ca5(SiO4)2SO4. Cement and Concrete Research, 113, 27-40. https://doi.org/10.1016/j.cemconres.2018.06.012

The synthesis and hydration of ternesite, Ca5(SiO4)2SO4. / Skalamprinos, Solon (Corresponding Author); Jen, Gabriel; Galan, Isabel; Whittaker, Mark; Elhoweris, Ammar; Glasser, Fredrik.

In: Cement and Concrete Research, Vol. 113, 30.11.2018, p. 27-40.

Research output: Contribution to journalArticle

Skalamprinos, S, Jen, G, Galan, I, Whittaker, M, Elhoweris, A & Glasser, F 2018, 'The synthesis and hydration of ternesite, Ca5(SiO4)2SO4', Cement and Concrete Research, vol. 113, pp. 27-40. https://doi.org/10.1016/j.cemconres.2018.06.012
Skalamprinos S, Jen G, Galan I, Whittaker M, Elhoweris A, Glasser F. The synthesis and hydration of ternesite, Ca5(SiO4)2SO4. Cement and Concrete Research. 2018 Nov 30;113:27-40. https://doi.org/10.1016/j.cemconres.2018.06.012
Skalamprinos, Solon ; Jen, Gabriel ; Galan, Isabel ; Whittaker, Mark ; Elhoweris, Ammar ; Glasser, Fredrik. / The synthesis and hydration of ternesite, Ca5(SiO4)2SO4. In: Cement and Concrete Research. 2018 ; Vol. 113. pp. 27-40.
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