Characteristic on Compressive Strength of Blast Slag and Fly Ash Hybrid Geopolymer Mortar
Geopolymer mortar is produced by alkaline activation of pozzolanic materials such as fly ground granulated blast-furnace slag (GGBFS) and fly ash (FA). Its unique reaction pathway facilitates rapid strength development in comparison with hydration of ordinary Portland cement (OPC). Geopolymer can be fabricated using various types and dosages of alkali-activator, which effectively gives a wider control over the performance of the final product. The present study investigates the effect of types of precursors and curing conditions on the fresh state and strength development characteristics of geopolymers, thereby comparatively exploring the effect of precursors from various sources of origin. The obtained result showed that the setting time and strength development of the specimens with the identical mix proportion but different precursors displayed significant variations.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1132593Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 911
 G. S. Ryu et al, in: The mechanical properties of fly ash-based geopolymer concrete with alkali activators, Construction and Building Materials, vol. 47, pp. 409~418, 2013.
 Y. H. Kwon et al, in: A Study on the quality properties of alkali-activated cement free mortar using Industrial by-products, Journal of Korea Recycled Construction Resources Institute, vol. 1, pp. 58~66, 2013.
 S. T. Kang et al, in: Optimum mix design of alkali-activated cement mortar using bottom ash as binder, Journal of the Korea Concrete Institute, vol. 23, pp. 487~494, 2011.
 M. Palacios and F. Puertas, in: Effect of shrinkage reducing admixtures on the properties of alkali-activated slag mortars and pastes, Cement and Concrete Research, vol. 37, pp. 691~702, 2007.
 J. Davidovits, in: Geopolymers and geopolymeric materials, Thermal Analysis and Calorimetry, vol. 35, pp. 429~441, 1989.
 A. Palomo et al, in: Alkali-activated fly ashes: A cement for the future, Cement and Concrete Research, vol. 29, pp. 1323~1329, 1999.