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Strength Development of Alkali-Activated Fly Ash Exposed to a Carbon Dioxide-Rich Environment at an Early Age
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 Title & Authors
Strength Development of Alkali-Activated Fly Ash Exposed to a Carbon Dioxide-Rich Environment at an Early Age
Park, Sol-Moi; Jang, Jeong-Gook; Kim, Gwang-Mok; Lee, Haeng-Ki;
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The development of a binder system with a lower carbon footprint as an alternative to Portland cement has been intensely researched. In the present study, alkali-activated fly ash exposed to carbon dioxide at an early age was characterized in compressive strength tests and by MIP, XRD and FT-IR analyses. The compressive strength of carbonated specimens experienced a dramatic increase in comparison to uncarbonated specimens. The microstructural densification of the carbonated specimens was evidenced by MIP. The XRD pattern showed peaks assigned to nahcolite, indicating that the pH was lower in the carbonated specimens. Under the carbon dioxide-rich environment, the aluminosilicate gel reached a more Si-rich state, which improved the mechanical properties of the alkali-activated fly ash.
Fly ash;Alkaline activation;Geopolymer;Carbonation;Strength development;
 Cited by
An NMR Spectroscopic Investigation of Aluminosilicate Gel in Alkali-Activated Fly Ash in a CO2-Rich Environment, Materials, 2016, 9, 5, 308  crossref(new windwow)
B. Lothenbach, K. Scrivener, and R. D. Hooton, "Supplementary Cementitious Materials," Cem. Concr. Res., 41 [12] 1244-56 (2011). crossref(new window)

M. C. G. Juenger, F. Winnefeld, J. L. Provis, and J. H. Ideker, "Advances in Alternative Cementitious Binders," Cem. Concr. Res., 41 [12] 1232-43 (2011). crossref(new window)

J. S. J. Deventer, J. L. Provis, and P. Duxon, "Technical and Commercial Progress in the Adoption of Geopolymer Cement," Miner. Eng., 29 89-104 (2012). crossref(new window)

S. A. Bernal and J. L. Provis, "Durability of Alkali-Activated Materials: Progress and Perspectives," J. Am. Ceram. Soc., 97 [4] 997-1008 (2014). crossref(new window)

A. Fernandez-Jimenez, A. G. De La Torre, A. Palomo, G. Lopez-Olmo, M. M. Alonso, and M. A. G. Aranda, "Quantitative Determination of Phases in the Alkaline Activation of Fly Ash. Part II: Degree of Reaction," Fuel, 85 [14] 1960-69 (2006). crossref(new window)

M. Criado, A. Palomo, and A. Fernandez-Jimenez, "Alkali Activation of Fly Ashes. Part 1: Effect of Curing Conditions on the Carbonation of the Reaction Products," Fuel, 84 [16] 2048-54 (2005). crossref(new window)

S. A. Bernal, J. L. Provis, B. Walkley, R. S. Nicolas, J. D. Gehman, D. G. Brice, A. R. Kilcullen, P. Duxson, and J. S. J. Deventer, "Gel Nanostructure in Alkali-Activated Binders Based on Slag and Fly Ash, and Effects of Accelerated Carbonation," Cem. Concr. Res., 53 127-44 (2013). crossref(new window)

S. Diamond, "Mercury Porosimetry: An Inappropriate Method for the Measurement of Pore Size Distributions in Cement-Based Materials," Cem. Concr. Res., 30 [10] 1517-25 (2000). crossref(new window)

J. G. Jang and H. K. Lee, "Effect of Fly Ash Characteristics on Delayed High-Strength Development of Geopolymers," Constr. Build. Mater., 102 260-69 (2016). crossref(new window)

J. G. Jang, H. J. Kim, S. M. Park, and H. K. Lee, "The Influence of Sodium Hydrogen Carbonate on the Hydration of Cement," Constr. Build. Mater., 94 746-9 (2015). crossref(new window)

Z. Zhang, H. Wang, J. L. Provis, and A. Reid, "Efflorescence: A Critical Challenge for Geopolymer Applications?," Concrete Institute of Australia's Biennial National Conference 2013, Gold Coast, Australia, 16-18 Oct, 2013.

M. Sitarz, W. Mozgawa, and M. Handke, "Rings in the Structure of Silicate Glasses," J. Mol. Struct., 511 281-85 (1999).

C. A. Rees, J. L. Provis, G. C. Lukey, and J. S. J. Deventer, "Attenuated Total Reflectance Fourier Transform Infrared Analysis of Fly Ash Geopolymer Gel Aging," Langmuir, 23 [15] 8170-79 (2007). crossref(new window)

A. Fernandez-Jimenez, A. Palomo, I. Sobrados, and J. Sanz, "The Role Played by the Reactive Alumina Content in the Alkaline Activation of Fly Ashes," Microporus Mesoporous Mater., 91 [1] 111-19 (2006). crossref(new window)

P. Innocenzi, "Infrared Spectroscopy of Sol-Gel Derived Silica-Based Films: A Spectra-Microstructure Overview," J. Non-Cryst. Solids, 316 [2] 309-19 (2003). crossref(new window)

T. Bakharev, "Geopolymeric Materials Prepared using Class F Fly Ash and Elevated Temperature Curing," Cem. Concr. Res., 35 [6] 1224-32 (2005). crossref(new window)