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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.

has been cited by the following article:

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

  AUTHORS: Alexey S. Brykov, Andrey S. Vasiliev, Maxim V. Mokeev

  KEYWORDS: Portland Cement Hydration; Set Accelerator; Basic Aluminum Sulfate; Aluminum Hydroxide; Sulfate Resistance; MAS NMR Spectroscopy

  JOURNAL NAME: Materials Sciences and Applications, Vol.4 No.12A, December 27, 2013

  ABSTRACT: 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.