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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Lateef N. Assi
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DOI:10.17265/1934-7359/2025.07.004
University of South Carolina, Dept. of Civil and Environ. Engineering, Columbia, SC 29208, USA
Development of sustainable construction materials has been the focus of research efforts worldwide in recent years. Concrete is a major construction material; hence, finding alternatives to ordinary Portland cement is of extreme importance due to the high levels of carbon dioxide emissions associated with its manufacturing process. This study investigates the geopolymerization process. Specimens with, two different water/binder weight ratios, 0.30 and 0.35, were monitored using acoustic emission. Results show that there is a significant difference in the acquisition data between the two different water/binder weight ratios. In addition, acoustic emission can be used to beneficially monitor and investigate the early geopolymerization process. The acoustic emission data were processed through pattern recognition. Two clusters were identified, assigned to a specific mechanism depending on their characteristics. SEM observations were coincided with pattern recognition findings.
Geopolymer concrete, compressive strength, silica fume activating solution, geopolymerization process, acoustic emission.
Journal of Civil Engineering and Architecture 19 (2025) 339-348
doi: 10.17265/1934-7359/2025.07.004
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