Abstract
The paper describes an attempt of chemical activation of fly ash and claims the usefulness of combination of such investigation methods as calorimetry and infrared absorption for investigations of early periods of cement hydration. The research samples were cement pastes made with an addition of fly ash and admixtures of chemical activators, CaCl2, Na2SO4 and NaOH, whereas a cement paste without fly ash addition and a cement-fly ash paste (both without admixtures) were used as reference samples. In order to investigate early periods of cement pastes hydration, the amount and rate of heat release were registered, and IR spectrums were checked at appointed hydration moments.
As a result, it was shown that the combination of calorimetric and IR absorption methods in the investigations of early periods of cement hydration was useful. It was confirmed that the use of chemical activators CaCl2, Na2SO4 and NaOH accelerated the hydration of cement pastes containing fly ash additive in early hours after adding water. The action of activators on hydrating cement system is different for each of investigated compounds.
Similar content being viewed by others
References
V. Rahhal, O. Cabrera, R. Talero and A. Delgado, J. Therm. Anal. Cal., 87 (2007) 331.
M. García de Lomas, M. I. Sánchez de Rojas and M. Frías, J. Therm. Anal. Cal., 90 (2007) 443.
C. A. Pinto, P. M. Büchler and J. Dweck, J. Therm. Anal. Cal., 87 (2007) 715.
Z. Giergiczny, J. Therm. Anal. Cal., 83 (2006) 227.
B. Pacewska, G. Blonkowski and I. Wilińska, J. Therm. Anal. Cal., 86 (2006) 179.
C. Y. Lee, H. K. Lee and K. M. Lee, Cem. Concr. Res., 33 (2003) 425.
C. S. Poon, S. C. Kou, L. Lam and Z. S. Lin, Cem. Concr. Res., 31 (2001) 873.
J. Poznański, Computer software for processing of data obtained from calorimeter, 2005.
W. Nocuń-Wczelik, IVth School of Thermal Analysis SAT’04, Zakopane 2004, p. 95 (in Polish).
M. Y. A. Mollah, W. Yu, R. Schennach and D. L. Cocke, Cem. Concr. Res., 30 (2000) 267.
A. Fernández-Jiménez and A. Palomo, Microporous Mesoporous Mater., 86 (2005) 207.
E. T. Stepkowska, J. M. Blanes, C. Real and J. L. Perez-Rodriguez, J. Therm. Anal. Cal., 82 (2005) 731.
H. F. W. Taylor, Cement Chemistry, Thomas Telford Publ., London 1998.
R. A. Nyquist and R. O. Kagel, Infrared Spectra of Inorganic Compounds (3800-45 cm−4), New York 1971.
S. Martínez-Ramírez, M.T. Blanco-Varela, I. Ereña and M. Gener, Appl. Clay Sci., 32 (2006) 40.
Z. Giergiczny, J. Therm. Anal. Cal., 76 (2004) 747.
W. Kurdowski, Cement Chemistry, PWN, Warsaw 1991 (in Polish).
C. R. Cheeseman and S. Asavapisit, Cem. Concr. Res., 29 (1999) 885.
A. K. Suryavanshi, J. D. Scantlebury and S. B. Lyon, Cem. Concr. Res., 25 (1995) 581.
U.A. Birnin-Yauri and F. P. Glasser, Cem. Concr. Res., 28 (1998) 1713.
C. Shi and R. L. Day, Cem. Concr. Res., 30 (2000) 51.
C. Shi and R. L. Day, Cem. Concr. Res., 30 (2000) 607.
J. Qian, C. Shi and Z. Wang, Cem. Concr. Res., 31 (2001) 1121.
V. K. Peterson, D. A. Neumann and R. A. Livingston, Chem. Phys. Lett., 419 (2006) 16.
S. Long, C. Liu and Y. Wu, Cem. Concr. Res., 28 (1998) 245.
B. A. Clark and P. W. Brown, Cem. Concr. Res., 29 (1999) 1943.
B. A. Clark and P. W. Brown, Cem. Concr. Res., 30 (2000) 233.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Pacewska, B., Wilińska, I. & Blonkowski, G. Investigations of cement early hydration in the presence of chemically activated fly ash. J Therm Anal Calorim 93, 769–776 (2008). https://doi.org/10.1007/s10973-008-9143-7
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10973-008-9143-7