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.
 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.
 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. http://dx.doi.org/10.1016/0008-8846(92)90017-P
 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.
 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.
 I. Richardson, “The Nature of C-S-H in Hardened Cements,” Cement and Concrete Research, Vol. 29, No. 8, 1999, pp. 1131-1147.
 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.
 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. http://dx.doi.org/10.1617/s11527-011-9737-6
 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.