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Journals / Journal of Sustainable Construction Materials and Technologies / 2023 / Cilt: 8 Sayı: 3

The influence of microwave curing on the strength of silica fume-added fly ash-based geopolymer mortars

Berivan YILMAZER POLAT
Pages
207–215
Publication Date
2023-10-03
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

This research can be considered an essential step for further optimizing and popularising geopolymer concrete and microwave curing and proposes a method that should be considered in the future development of more sustainable construction materials.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Geopolymer concretes a substitute for traditional Portland cement as a more environmentally sustainable alternative.
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Key Findings & Data:In addition, one of the most significant advantages of geopolymer concrete is the high setting speed that can be achieved with thermal curing, that is, the short curing period.
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Conclusion & Impact:This research can be considered an essential step for further optimizing and popularising geopolymer concrete and microwave curing and proposes a method that should be considered in the future development of more sustainable construction materials.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Microwave curing · fly ash-based geopolymer · early strength

Abstract

Geopolymer concretes a substitute for traditional Portland cement as a more environmentally sustainable alternative. In addition, one of the most significant advantages of geopolymer concrete is the high setting speed that can be achieved with thermal curing, that is, the short curing period. Research on geopolymer concrete has focused on curing, where curing is usually done with conventional ovens. Microwave curing initiates heat generation at the molecular level, which results in a minimal heat increase on the surface of the specimens compared to traditional thermal curing methods. In addition, it provides internal, rapid, and homogeneous heating and rapid strength development. This study is based on research that examined the effect of microwave cure on the compressive strength of silica füme-modified geopolymer mortar. In the study, sodium silicate and sodium hydroxide were used for activation, and first of all, fly ash substituted geopolymer mortar specimens were subjected to conventional thermal curing in an oven. On the other hand, the mortar specimens with the same composition were subjected to short-duration (10 minutes) microwave curing at power levels of between 200-600 W. When the results were compared regarding compressive strength, void and percent water absorption, UPV, and SEM-internal structure examination, it was revealed that microwave curing could be used faster than the conventional oven curing method in silica füme-added fly ash-based geopolymer mortars. This research can be considered an essential step for further optimizing and popularising geopolymer concrete and microwave curing and proposes a method that should be considered in the future development of more sustainable construction materials.

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Cite This Article

POLAT, B. Y. (2023). The influence of microwave curing on the strength of silica fume-added fly ash-based geopolymer mortars. Journal of Sustainable Construction Materials and Technologies, Cilt: 8 Sayı: 3, 207–215. https://ajindex.com/articles/964535

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References (3)

  1. M. S. Imbabi, C. Carrigan, and S. McKenna, "Trends and developments in green cement and concrete technology," International Journal of Sustainable Built Environment, vol. 1, no. 2, pp. 194–216, 2012, doi: 10.1016/J.IJSBE.2013.05.001. J. Cai, X. Li, J. Tan, and B. Vandevyvere, "Thermal and compressive behaviors of fly ash and metakaolin-based geopolymer," Journal of Building Engineering, vol. 30, p. 101307, Jul. 2020, doi: 10.1016/J.JOBE.2020.101307. B. Y. POLAT, M. UYSAL, and V. KORKMAZ, "A RESEARCH FOR BACTERIAL SELF-HEALING IN METAKAOLIN BASED GEOPOLYMER MORTARS," Sigma Journal of Engineering and Natural Sciences, vol. 38, no. 3, pp. 1401–1414, Oct. 2021, Accessed: May 18, 2023. [Online]. Available: https://dergipark.org.tr/en/pub/sigma/issue/65286/1007459 B. Yılmazer Polat and M. Uysal, "Bacterial crack healing in metakaolin-based geopolymer mortars," Journal of Building Engineering, vol. 39, p. 102291, Jul. 2021, doi: 10.1016/J.JOBE.2021.102291. O. A. Mayhoub, E. S. A. R. Nasr, Y. Ali, and M. Kohail, "Properties of slag-based geopolymer reactive powder concrete," Ain Shams Engineering Journal, vol. 12, no. 1, pp. 99–105, Mar. 2021, doi: 10.1016/J.ASEJ.2020.08.013. ASTM International, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use as a Mineral Admixture in Concrete. 2000, pp. 04–02. Çimento-Bölüm 1: “Genel Çimentolar-Bileşim, Özellikler ve Uygunluk Kriterleri.” Ankara, 2002.
  2. O. A. Mayhoub, A. Mohsen, Y. R. Alharbi, A. A. Abadel, A. O. Habib, and M. Kohail, "Effect of curing regimes on chloride binding capacity of geopolymer," Ain Shams Engineering Journal, vol. 12, no. 4, pp. 3659–3668, Dec. 2021, doi: 10.1016/J.ASEJ.2021.04.032. Z. Sun and A. Vollpracht, "Isothermal calorimetry and in-situ XRD study of the NaOH activated fly ash, metakaolin, and slag," Cem Concr Res, vol. 103, pp. 110–122, Jan. 2018, doi: 10.1016/J.CEMCONRES.2017.10.004. J. M. Osepchuk, "A History of Microwave Heating Applications," IEEE Trans Microw Theory Tech, vol. 32, no. 9, pp. 1200–1224, 1984, doi: 10.1109/TMTT.1984.1132831. T. Santos, M. A. Valente, J. Monteiro, J. Sousa, and L. C. Costa, "Electromagnetic and thermal history during microwave heating," Appl Therm Eng, vol. 31, no. 16, pp. 3255–3261, Nov. 2011, doi: 10.1016/J.APPLTHERMALENG.2011.06.006. Y. Esen and B. Yilmazer, "An investigation of X-ray and radioisotope energy absorption of heavyweight concrete containing barite," 2011.
  3. I. B. Topçu, M. U. Toprak, and D. Akdaǧ, "Determination