The Impact of Aluminum-Containing Set Accelerators on Sulfate Resistance of Portland Cement Compositions

DOI: 10.4236/msa.2013.412A005   PDF   HTML     4,157 Downloads   5,556 Views   Citations


This study contains comparative research of sulfate resistance of ordinary Portland cement pastes with addition of basic aluminum sulfate (hydroxosulfate, Al(OH)1.78(SO4)0.61) and amorphous Al(OH)3. Over 3 months of storing in sodium sulfate solution, the most significant expansion and deterioration occur in case of samples with aluminum hydroxide. During sulfate resistance test, the ratio between aluminum nuclei in AFt (ettringite) and AFm phases was studied by 27Al-MAS NMR, and the impact of aluminum-containing admixtures on this ratio was specified. In accordance with NMR data, in samples with Al(OH)3, the rate of secondary ettringite formation becomes noticeable after one month of storing in sulfate solution. For samples with Al(OH)1.78(SO4)0.61, the rate of elongation and temper of changes in molar ratio between sulfoaluminate phases were comparable with reference samples without admixtures.

Share and Cite:

A. Brykov, A. Vasiliev and M. Mokeev, "The Impact of Aluminum-Containing Set Accelerators on Sulfate Resistance of Portland Cement Compositions," Materials Sciences and Applications, Vol. 4 No. 12A, 2013, pp. 29-34. doi: 10.4236/msa.2013.412A005.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] R. Myrdal, “Accelerating Admixtures for Concrete. State of the Art,” SINTEF Report N SBF BK A07025, Trondheim, 2007, 35 p.
[2] G. Saout, B. Lothenbach, A. Hori, et al., “Hydration Mechanism of Quick Hardening Cement Based on OPC Blended with an Amorphous Calcium Aluminate,” 18th Internationale Baustofftagung (IBAUSIL) Weimar, 12-15 September 2012, pp. 474-481.
[3] Q. Xu and J. Stark, “The Chemical Action of Al(OH)3 Accelerators in the Early Hydration of Portland Cements,” Zement Kalk Gips, Vol. 61, No 3, 2008, pp. 82-92.
[4] А. Brykov, А. Vasilev and M. Mokeev, “Hydration of Portland Cement in the Presence of High Active Aluminium Hydroxide,” Russian Journal of Applied Chemistry, Vol. 85, No. 12, 2012, pp. 1793-1799.
[5] K. Natesaiyer and K. Hover, “Chemical Agents for Reducing Solubility of Silica in 1N Sodium Hydroxide,” Cement and Concrete Research, Vol. 22, No. 4, 1992, pp. 653-662.
[6] T. Chappex and K. Scrivener, “The Influence of Aluminium on the Dissolution of Amorphous Silica and Its Relation to Alkali Silica Reaction,” Cement and Concrete Research, Vol. 42, No. 12, 2012, pp. 1645-1649.
[7] А. Brykov, А. Vasilev and M. Mokeev, “Hydration of Portland Cement in the Presence of Aluminum-Containing Setting Accelerators,” Russian Journal of Applied Chemistry, Vol. 86, No. 6, 2013, pp. 793-801.
[8] H. Taylor, “Cement Chemistry,” Thomas Telford, London, 1997, 459 p.
[9] I. Richardson, “The Nature of C-S-H in Hardened Cements,” Cement and Concrete Research, Vol. 29, No. 8, 1999, pp. 1131-1147.
[10] M. Andersen, H. Jakobsen and J. Skibsted, “Characterization of White Portland Cement Hydration and the C-S-H Structure in the Presence of Sodium Aluminate by 27Al and 29Si MAS NMR Spectroscopy,” Cement and Concrete Research, Vol. 34, No. 5, 2004, pp. 857-868.
[11] A. Mendes, W. Gates, J. Sanjayan and F. Collins, “NMR, XRD, IR and Synchrotron NEXAFS Spectroscopic Studies of OPC and OPC/Slag Cement Paste Hydrates,” Materials and Structures, Vol. 44, No. 10, 2011, pp. 1773-1791.
[12] A. Rawal, B. Smith, G. Athens, et al., “Molecular Silicate and Aluminate Species in Anhydrous and Hydrated Cements,” Journal of the American Chemical Society, Vol. 132, No. 21, 2010, pp. 7321-7337.

comments powered by Disqus

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.