Efflorescence Control in Calcined Kaolin-Based Geopolymer Using Silica Fume and OPC
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 6
Abstract
Efflorescence has been an ongoing issue facing the development of geopolymers; excess efflorescence may disturb the stability of the binder microstructure. This paper investigates the controlling of efflorescence in a calcined kaolin-based geopolymer binder cured at ambient temperature. Silica fume (SF) and ordinary Portland cement (OPC) were used at different replacement levels (0, 5, 10, and 15 wt.%) to control the efflorescence via microstructural refinement. A digital camera was used to observe the extent of efflorescence on the surface of geopolymer mortars. Several techniques were performed to understand the effects of SF and OPC on the microstructural changes of the geopolymer binders. The bicarbonate and carbonate ion concentrations, as well as the alkalinity of leaching solutions, were measured. Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and x-ray diffraction (XRD) tests were used to better understand the microstructural changes. The results revealed that using SF at 5wt.% or OPC at 10% reduces the efflorescence extent with improved compressive strength.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The second and the third authors gratefully acknowledge the financial support from the Deanship of Scientific Research at Jordan University of Science and Technology under grant number 2019/146.
References
Aiken, T. A., J. Kwasny, W. Sha, and M. N. Soutsos. 2018. “Effect of slag content and activator dosage on the resistance of fly ash geopolymer binders to sulfuric acid attack.” Cem. Concr. Res. 111 (Sep): 23–40. https://doi.org/10.1016/j.cemconres.2018.06.011.
Albitar, M., M. M. Ali, P. Visintin, and M. Drechsler. 2015. “Effect of granulated lead smelter slag on strength of fly ash-based geopolymer concrete.” Constr. Build. Mater. 83 (May): 128–135. https://doi.org/10.1016/j.conbuildmat.2015.03.009.
Assi, L. N., E. E. Deaver, M. K. Elbatanouny, and P. Ziehl. 2016. “Investigation of early compressive strength of fly ash-based geopolymer concrete.” Constr. Build. Mater. 112 (Jun): 807–815. https://doi.org/10.1016/j.conbuildmat.2016.03.008.
ASTM. 2002. Standard test method for compressive strength of hydraulic cement mortars (using 2-in. or [50-mm] cube specimens). ASTM C109. West Conshohocken, PA: ASTM.
Bernal, S. A., V. Bílek, M. Criado, A. Fernández-Jiménez, E. Kavalerova, P. V. Krivenko, M. Palacios, A. Palomo, J. L. Provis, and F. Puertas. 2014. “Durability and testing—Degradation via mass transport.” In Alkali Activated Materials. Berlin: Springer.
Bernal, S. A., R. M. De Gutierrez, J. L. Provis, and V. Rose. 2010. “Effect of silicate modulus and metakaolin incorporation on the carbonation of alkali silicate-activated slags.” Cem. Concr. Res. 40 (6): 898–907. https://doi.org/10.1016/j.cemconres.2010.02.003.
Davidovits, J. 2002. “Years of successes and failures in geopolymer applications. Market trends and potential breakthroughs.” In Proc., Geopolymer 2002 Conf. 2002. Melbourne, Australia: Geopolymer Institute Saint-Quentin.
Deb, P. S., P. K. Sarker, and S. Barbhuiya. 2015. “Effects of nano-silica on the strength development of geopolymer cured at room temperature.” Constr. Build. Mater. 101 (Dec): 675–683. https://doi.org/10.1016/j.conbuildmat.2015.10.044.
Ding, Y. C., T. W. Cheng, and Y. S. Dai. 2017. “Application of geopolymer paste for concrete repair.” Struct. Concr. 18 (4): 561–570. https://doi.org/10.1002/suco.201600161.
Dow, C., and F. P. Glasser. 2003. “Calcium carbonate efflorescence on portland cement and building materials.” Cem. Concr. Res. 33 (1): 147–154. https://doi.org/10.1016/S0008-8846(02)00937-7.
Duan, P., C. Yan, and W. Zhou. 2017. “Compressive strength and microstructure of fly ash based geopolymer blended with silica fume under thermal cycle.” Cem. Concr. Compos. 78 (Apr): 108–119. https://doi.org/10.1016/j.cemconcomp.2017.01.009.
Durak, U., O. Karahan, B. Uzal, S. Ilkentapar, and C. D. Atiş. 2020. Influence of nano and nano particles on strength, workability, and microstructural properties of fly ash-based geopolymer. Lausanne, Switzerland: International Federation for Structural Concrete. https://doi.org/10.1002/suco.201900479.
Hasnaoui, A., E. Ghorbel, and G. Wardeh. 2019. “Optimization approach of granulated blast furnace slag and metakaolin based geopolymer mortars.” Constr. Build. Mater. 198 (Feb): 10–26. https://doi.org/10.1016/j.conbuildmat.2018.11.251.
Huang, Y., M. Han, and R. Yi. 2012. “Microstructure and properties of fly ash-based geopolymeric material with 5A zeolite as a filler.” Constr. Build. Mater. 33 (Aug): 84–89. https://doi.org/10.1016/j.conbuildmat.2012.01.014.
Kani, E. N., A. Allahverdi, and J. L. Provis. 2012. “Efflorescence control in geopolymer binders based on natural pozzolan.” Cem. Concr. Compos. 34 (1): 25–33. https://doi.org/10.1016/j.cemconcomp.2011.07.007.
Khater, H. M. 2013. “Effect of silica fume on the characterization of the geopolymer materials.” Int. J. Adv. Struct. Eng. 5 (1): 12. https://doi.org/10.1186/2008-6695-5-12.
Matalkah, F., P. Soroushian, R. R. Weerasiri, and A. Peyvandi. 2019. “Development of indigenous binders as construction materials.” Proc. Inst. Civ. Eng. 172 (1): 10–19. https://doi.org/10.1680/jcoma.16.00065.
Matalkah, F., L. Xu, W. Wu, and P. Soroushian. 2017. “Mechanochemical synthesis of one-part alkali aluminosilicate hydraulic cement.” Mater. Struct. 50 (1): 97. https://doi.org/10.1617/s11527-016-0968-4.
Mehta, A., and R. Siddique. 2017a. “Properties of low-calcium fly ash based geopolymer concrete incorporating OPC as partial replacement of fly ash.” Constr. Build. Mater. 150 (Sep): 792–807. https://doi.org/10.1016/j.conbuildmat.2017.06.067.
Mehta, A., and R. Siddique. 2017b. “Strength, permeability and micro-structural characteristics of low-calcium fly ash based geopolymers.” Constr. Build. Mater. 141 (Jun): 325–334. https://doi.org/10.1016/j.conbuildmat.2017.03.031.
Mehta, A., and R. Siddique. 2017c. “Sulfuric acid resistance of fly ash based geopolymer concrete.” Constr. Build. Mater. 146 (Aug): 136–143. https://doi.org/10.1016/j.conbuildmat.2017.04.077.
Mohabbi, M. 2019. “Investigation of sulfates effects in perlite-based geopolymer.” Struct. Concr. 20 (4): 1402–1410. https://doi.org/10.1002/suco.201900039.
Moon, J., Z. Wang, M. O. Kim, and S.-C. Chun. 2016. “Strength enhancement of alkaline activated fly ash cured at ambient temperature by delayed activation of substituted OPC.” Constr. Build. Mater. 122 (Sep): 659–666. https://doi.org/10.1016/j.conbuildmat.2016.06.111.
Nath, P., and P. K. Sarker. 2015. “Use of OPC to improve setting and early strength properties of low calcium fly ash geopolymer concrete cured at room temperature.” Cem. Concr. Compos. 55 (Jan): 205–214. https://doi.org/10.1016/j.cemconcomp.2014.08.008.
Pu, Q., L. Jiang, J. Xu, H. Chu, Y. Xu, and Y. Zhang. 2012. “Evolution of pH and chemical composition of pore solution in carbonated concrete.” Constr. Build. Mater. 28 (1): 519–524. https://doi.org/10.1016/j.conbuildmat.2011.09.006.
Qian, C., J. Wang, T. Cao, J. Qu, and J. Guo. 2018. “The mathematical model and numerical calculation method of efflorescence.” Struct. Concr. 19 (5): 1428–1435. https://doi.org/10.1002/suco.201700177.
Rostami, M., and K. Behfarnia. 2017. “The effect of silica fume on durability of alkali activated slag concrete.” Constr. Build. Mater. 134 (Mar): 262–268. https://doi.org/10.1016/j.conbuildmat.2016.12.072.
Škvára, F., L. Kopecký, L. Myšková, V. Šmilauer, L. Alberovska, and L. Vinšová. 2009. “Aluminosilicate polymers–influence of elevated temperatures, efflorescence.” Ceram. Silik. 53 (4): 276–282.
Somna, K., C. Jaturapitakkul, P. Kajitvichyanukul, and P. Chindaprasirt. 2011. “NaOH-activated ground fly ash geopolymer cured at ambient temperature.” Fuel 90 (6): 2118–2124. https://doi.org/10.1016/j.fuel.2011.01.018.
Temuujin, J., W. Rickard, M. Lee, and A. Van Riessen. 2011. “Preparation and thermal properties of fire resistant metakaolin-based geopolymer-type coatings.” J. Non-Cryst. Solids 357 (5): 1399–1404. https://doi.org/10.1016/j.jnoncrysol.2010.09.063.
Temuujin, J., and A. Van Riessen. 2009. “Effect of fly ash preliminary calcination on the properties of geopolymer.” J. Hazard. Mater. 164 (2–3): 634–639. https://doi.org/10.1016/j.jhazmat.2008.08.065.
Turner, L. K., and F. G. Collins. 2013. “Carbon dioxide equivalent () emissions: A comparison between geopolymer and OPC cement concrete.” Constr. Build. Mater. 43 (Jun): 125–130. https://doi.org/10.1016/j.conbuildmat.2013.01.023.
Uysal, M., M. M. AL-Mashhadani, Y. Aygörmez, and O. Canpolat. 2018. “Effect of using colemanite waste and silica fume as partial replacement on the performance of metakaolin-based geopolymer mortars.” Constr. Build. Mater. 176 (Jul): 271–282. https://doi.org/10.1016/j.conbuildmat.2018.05.034.
Wang, J., T. Zhou, D. Xu, Z. Zhou, P. Du, N. Xie, X. Cheng, and Y. Liu. 2018. “Effect of nano-silica on the efflorescence of waste based alkali-activated inorganic binder.” Constr. Build. Mater. 167 (Apr): 381–390. https://doi.org/10.1016/j.conbuildmat.2018.02.006.
Zhang, Z., J. L. Provis, A. Reid, and H. Wang. 2014a. “Fly ash-based geopolymers: The relationship between composition, pore structure and efflorescence.” Cem. Concr. Res. 64 (Oct): 30–41. https://doi.org/10.1016/j.cemconres.2014.06.004.
Zhang, Z. H., T. Yang, and H. Wang. 2014b. The effect of efflorescence on the mechanical properties of fly ash-based geopolymer binders. In 23rd Australasian Conf. on the Mechanics of Structures and Materials (ACMSM23), edited by S. T. Smith, 107–112. Lismore, Australia: Southern Cross Univ.
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 6 • June 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Jul 21, 2020
Accepted: Nov 20, 2020
Published online: Mar 27, 2021
Published in print: Jun 1, 2021
Discussion open until: Aug 27, 2021
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