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Geochemical Modelling of the Effect of Calcite and Gypsum on the Hydration of Cements  

Ryu, Ji-Hun (Korea Atomic Energy Research Institute)
Kim, Geon-Young (Korea Atomic Energy Research Institute)
Koh, Yong-Kwon (Korea Atomic Energy Research Institute)
Choi, Jong-Won (Korea Atomic Energy Research Institute)
Publication Information
Journal of the Mineralogical Society of Korea / v.23, no.2, 2010 , pp. 151-159 More about this Journal
Abstract
The effect of calcite and gypsum on the hydration of Portland cement was investigated using GEM-PSI, a geochemical model. Addition of calcite and gypsum up to 5 wt% of total cement clinker into Portland cement was found to influence the hydrate assemblage of the hydrated cement in different ways. The results of geochemical modelling showed that the fraction of calcium monocarbonate increased by the hydration of cement with the increase of calcite addition. The results of modelling also indicated that gypsum increased the fraction of ettringite in the assemblage of hydrated cement as the amount of gypsum added increases. This study showed that porosity generated by the hydration of cement had a significant relation with the amount of calcite and gypsum added. The porosity of hydrated cement was lower when calcite added up to 3 wt% of cement clinker compared to the hydrated cement with the same amount of gypsum addition. However, when calcite added more than 3% of cement clinker, the porosity of hydrated cement were higher than that of hydrated cement with the same amount of gypsum addition.
Keywords
Cement; cement hydration; calcite; gypsum; geochemical model;
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1 Rahhal, V. and Talero, R. (2008) Calorimetry of portland cement with metakaolines, quartz and gypsum additions. J. Therm. Anal. Cal., 91, 825-834.   DOI   ScienceOn
2 Suzuki, K., Nishikawa, T., and Ito, S. (1985) Formation and carbonation of C-S-H in water. Cem. Concr. Res., 15, 213-224.   DOI   ScienceOn
3 Feldman, R.F., Ramachandran, V.S., and Sereda, P.J. (1965) Influence of $CaCO_{3}$ on the hydration of 3CaO.$Al_{2}O_{3}$. J. Am. Ceram. Soc., 48, 25-30.   DOI
4 Damidot, D., Stronach, S., Kindness, A., Atkins, M., and Glasser, F.P. (1994) Thermodynamic investigation of the CaO-$Al_{2}O_{3}$-$CaCO_{3}$-$H_{2}O$ closed system at ${25^{\circ}C}$ and the influence of Na2O. Cem. Concr. Res., 24, 563-572.   DOI   ScienceOn
5 Damidot, D., Atkins, M., Kindness, A., and Glasser, F.P, (1992) Sulphate attack on concrete: limits of the AFt stability domain. Cem. Conc. Res., 22, 229-234.   DOI   ScienceOn
6 Barker, A.P. and Cory, H.P. (1991) The early hydration of limestone filled cements, In: Swamy, R.N. (Ed.), Proc. Blended Cements in Construction, Sheffield, UK, Elsevier, 107-124.
7 Berner, U.R. and Kulik, D.A. (2002) Ca-Al-hydrates: solid solutions? Goldschmidt 2002 Conference, Davos, Switzerland.
8 Berner U. (2004) Status of Cement Modelling-Future Investigations in the View of Cement/Bentonite Interactions. In: Proceedings of International Workshop on Bentonite-Cement Interaction in Repository Environments, April 14-16, Tokyo, Japan.
9 Bennett, D.G., Read, D., Atkins, M., and Glasser, F.P. (1992) A thermodynamic model for blended cements: II. Cement hydrate phases; thermodynamic values and modelling studies. J. Nucl. Mater., 190, 315-325.   DOI   ScienceOn
10 Bensted, J. (1980) Some hydration investigations involving Portland cement effect of calcium carbonate substitution of gypsum. World. Cem. Technol., 11, 395-406.
11 Strydom, C.A. and Potgieter, J.H. (1999) Dehydration behaviour of a natural gypsum and a phosphogypsum during milling. Thermochimica Acta, 332, 89-96.   DOI   ScienceOn
12 Taylor, H.F.W. (1997) Cement Chemistry. Thomas Telford Publishing, London, 475p.
13 Tzouvalasl, G., Rantis, G., and Tsimas, S. (2004) Alternative calcium-sulfate-bearing materials as cement retarders: Part II. FGD gypsum. Cem. Concr. Res., 34, 2119-2125.   DOI   ScienceOn
14 Warren, C.J. and Reardon, E.J. (1994) The solubility of ettringite at 25℃. Cem. Concr. Res., 24, 1515-1524.   DOI   ScienceOn
15 Perkins, R.B. and Palmer, C.D. (1999) Solubility of ettringite $\left(Ca_{6}\left[Al\left(OH\right)_{6}\right]_{2}\left(SO_{4}\right)_{3}{\cdot}26H_{2}O)\right)$ at $5{\sim}75^{\circ}C$. Geochim. Cosmochim. Acta, 63, 1969-1980.   DOI   ScienceOn
16 Reardon, E.J. (1992) Problems and approaches to the prediction of the chemical composition in cement/ water systems. Waste Manage., 12, 221-239.   DOI   ScienceOn
17 Matschei, T., Lothenbach, B., and Glasser, F.P. (2007) The AFm phase in Portland cement. Cem. Concr. Res., 37, 118-130.   DOI   ScienceOn
18 Kulik, D. (2007) GEM-PSI 2.1, http://gems.web.psi.ch/, PSI-Viligen, Switzerland.
19 Kulik, D.A. and Kersten, M. (2001) Aqueous solubility diagrams for cementitious waste stabilization system: II. End-member stoichiometries of ideal calcium silicates hydrate solid solutions. J. Am. Ceram. Soc., 84, 3017-3026.   DOI   ScienceOn
20 Glasser, F.P., Kindness, A., and Stronach, S.A. (1999) Stability and solubility relationships in AFm phases: Part I. Chloride, sulfate and hydroxide. Cem. Concr. Res., 29, 861-866.   DOI   ScienceOn
21 Ingram, K.D. (1991) A review of limestone addition to portland cement and concrete. Cem. Concr. Composites, 13, 165-170.   DOI   ScienceOn
22 Lothenbach, B., Matschei, T., Moschner, G., and Glasser, F.P. (2008b) Thermodynamic modelling of the effect of temperature on the hydration and porosity of Portland cement. Cem. Concr. Res., 37, 1379-1410.
23 Neville, A.M. (2002) Properties of Concrete. Pearson Education Limited, 844p.
24 Lothenbach, B., Le Saout, G., Gallucci, E., and Scrivener, K. (2008a) Influence of limestone on the hydration of Portland cements. Cem. Conc. Res., 38, 848-860.   DOI   ScienceOn