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The Influence of Al2O3 on the Properties of Alkali-Activated Slag Cement
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 Title & Authors
The Influence of Al2O3 on the Properties of Alkali-Activated Slag Cement
Kim, Tae-Wan; Kang, Choong-Hyun;
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This research investigates the influence of ground granulated blast furnace slag (GGBFS) composition on the alkali-activated slag cement (AASC). Aluminum oxide () was added to GGBFS binder between 2% and 16% by weight. The alkaline activators KOH (potassium hydroxide) was used and the water to binder ratio of 0.50. The strength development results indicate that increasing the amount of enhanced hydration. The 2M KOH + 16% and 4M KOH + 16% specimens had the highest strength, with an average of 30.8 MPa and 45.2 MPa, after curing for 28days. The strength at 28days of 2M KOH + 16% was 46% higher than that of 2M KOH (without ). Also, the strength at 28days of 4M KOH + 16% was 44% higher than that of 4M KOH (without ). Increase the contents of the binder results in the strength development at all curing ages. The incorporation of AASC tended to increases the ultrasonic pulse velocity (UPV) due to the similar effects of strength, but increasing the amount of adversely decreases the water absorption and porosity. Higher addition of in the specimens increases the Al/Ca and Al/Si in the hydrated products. SEM and EDX analyses show that the formation of much denser microstructures with addition.
alkali-activated slag cement;aluminum oxide;strength;microstructure;
 Cited by
Kim, T. W., "The Strength Properties of Alkali-Activated Slag Mortars by Combined Caustic Alkali with Sodium Carbonate as Activator", Journal of the Korea Concrete Institute, Vol.24, No.6, 2012, pp.745-752. crossref(new window)

Kim, G. W., Kim, B. J., Yang, K. H., and Song, J. K., "Strength Development of Blended Sodium Alkali-Activated Ground Granulated Blast-Furnace Slag (GGBS) Mortar", Journal of the Korea Concrete Institute, Vol.24, No.2, 2012, pp.137-145. crossref(new window)

Chi, M., "Effects of dosage of alkali-activated solution and curing conditions on the properties and durability of alkaliactivated slag concrete", Construction and Building Materials, Vol.35, 2012, pp.240-245. crossref(new window)

Escalante-Garcia, J. I., Fuentes, F. A., Gorokhovsky, A., Fraire-Luna, P. E., and Mendoza-Suarez, G., "Hydration Products and Reactivity of Blast-Furnace Slag Activated by Various Alkalis", Journal of American Ceramic Society, Vol.86, No.12, 2003, pp.2148-2153. crossref(new window)

Vladimir Zivica, "Effect of type and dosage of alkaline activator and temperature on the properties of alkali-activated slag mixtures", Construction and Building Materials, Vol.21, 2007, pp.1463-1469. crossref(new window)

Sun, G. K., Young, J. F., and Kirkpatrick, R. J., "The role of Al in C-S-H: NMR, XRD and compositional results for precipitated samples", Cement and Concrete Research, Vol.36, 2006, pp.18-29. crossref(new window)

Pardal, X., Pochard, I., and Nonat, A., "Experimental study of Si-Al substitution in calcium-silicate-hydrate (C-S-H) prepared under equilibrium conditions", Cement and Concrete Research, Vol.39, 2009, pp.637-643. crossref(new window)

L'Hopital, E., Lothenbach, B., Le Saout, G., Kulik, D. A., and Scrivener, K., "Incorporation of aluminium in calciumsilicate- hydrates", Cement and Concrete Research, Vol.75, 2015, pp.91-103. crossref(new window)

Gruskovnjak, A., Lothenbach, B., Winnefeld, F., Figi, R., Ko, S.-C., Adler, M., and Mader, U., "Hydration mechanisms of super sulphated slag cement", Cement and Concrete Research, Vol.38, 2008, pp.983-992. crossref(new window)

Myers, R. J., L'Hopital, E., Provis, J. L., and Lothenbach, B., "Effect of temperature and aluminium on calcium (alumino) silicate hydrate chemistry under equilibrium conditions", Cement and Concrete Research, Vol.68, 2015, pp.83-93. crossref(new window)

Barbhuiya, S., Mukherjee, S., and Nikraz, H., "Effects of nano-$Al_2O_3$ on early-age microstructural properties of cement paste", Construction and Building Materials, Vol.52, 2014, pp.189-193. crossref(new window)

Lin, K. L., Wang, K. S., Tzeng, B. Y., Wang, N. F., and Lin, C. Y., "Effects of $Al_2O_3$ on the hydration activity of municipal solid waste incinerator fly ash slag", Cement and Concrete Research, Vol.34, 2004, pp.587-592. crossref(new window)

Sakulich, A. R., Anderson, E., Schauer, C. L., and Barsoum, M. W., "Influence of Si:Al ratio on the microstructural and mechanical properties of a fine-limestone aggregate alkaliactivated slag concrete", Materials and Structures, Vol.43, 2010, pp.1025-1035. crossref(new window)

Tanzer, R., Buchwald, A., and Stephan, D., "Effect of slag chemistry on the hydration of alkali-activated blast-furnace slag", Materials and Structures, Vol.48, 2015, pp.629-641. crossref(new window)

Haha, M. B., Lothenbach, B., Le Saout, G., and Winnefeld, F., "Influence of slag chemictry on the hydration of alkaliactivated blast-furnace slag-Part II: Effect of $Al_2O_3$", Cement and Concrete Research, Vol.42, 2012, pp.74-83. crossref(new window)

Melo Neto, A. A., Cincotto, M. A., and Repette, W., "Drying and autogenous shrinkage of pastes and mortars with activated slag cement", Cement and Concrete Research, Vol.38, 2008, pp.565-574. crossref(new window)

Cengiz Duran Atis, Cahit Bilim, Ozlem Celik, Okan Karahan, "Influence of activator on the strength and drying shrinkage of alkali-activated slag mortar", Construction and Building Materials, Vol.23, 2009, pp.548-555. crossref(new window)

Collins, F., and Sanjayan, J. G., "Effect of pore size distribution on drying shrinkage of alkali-activated slag concrete", Cement and Concrete Research, Vol.30, 2000, pp.1401-1406. crossref(new window)

Ogawa, K., "$C_4A_3S$ hydration, ettringite formation, and its expansion mechanism: II. Microstructural observation of expansion", Cement and Concrete Research, Vol.12, 1982, pp.101-109. crossref(new window)

Odler, I., and Colán-Subauste, J., "Investigation on cement expansion associated with ettringite formation", Cement and Concrete Research, Vol.29, 1999, pp.731-735. crossref(new window)

Wang, S. D., and Scrivener, K. L., "Hydration products of alkali activated slag cement", Cement and Concrete Research, Vol.25, 1995, pp.561-571. crossref(new window)

Schneider, J., Cincotto, M. A., and Panepucci, H., "29Si and 27Al high-resolution NMR characterization of calcium silicate hydrate phases in activated blast-furnace slag pastes", Cement and Concrete Research, Vol.31, 2001, pp.993-1001. crossref(new window)

Puertas, F., Palacios, M., Manzano, H., Dolado, J. S., Rico, A., and Rodriguez, J., "A model for the C-A-S-H gel formed in alkali-activated slag cement", Journal of the European Ceramic Society, Vol.31, 2011, pp.2043-2056. crossref(new window)