TY - GEN
T1 - Applying fly ash as a high strength water-resistant precast construction material through geopolymerization
AU - Zhang, J.
AU - Feng, Q.
N1 - Funding Information:
J. Zhang is grateful to Freeport-McMoRan Copper & Gold, Inc. for sponsoring the Freeport McMoRan Copper and Gold Chair in Mineral Processing in the Department of Mining and Geological Engineering in the University of Arizona. Mitchell Smith from Boral USA is greatly appreciated for providing the fly ash samples for test.
Publisher Copyright:
Copyright © 2019 by SME.
PY - 2019
Y1 - 2019
N2 - Study has been carried out to apply fly ash as a high strength, water-resistant precast construction material through geopolymerization. Experiment results show that the working conditions such as water content, the concentration of NaOH, curing temperature and curing time, significantly affect the mechanical property of geopolymer matrix. Through optimization, an above 100 MPa compressive strength has been achieved with the geopolymerization products. Water soaking tests show that the geopolymerization product has a very high water resistance without losing noticeable compressive strength even after a one month soaking time. To elucidate the geopolymerization mechanism, microscopic techniques such as SEM/EDS and XRD are also applied to investigate the microstructure, the elemental and phase composition of geopolymerization products. The findings of the present work provide a novel method to apply fly ash as a high strength water-resistant precast construction material.
AB - Study has been carried out to apply fly ash as a high strength, water-resistant precast construction material through geopolymerization. Experiment results show that the working conditions such as water content, the concentration of NaOH, curing temperature and curing time, significantly affect the mechanical property of geopolymer matrix. Through optimization, an above 100 MPa compressive strength has been achieved with the geopolymerization products. Water soaking tests show that the geopolymerization product has a very high water resistance without losing noticeable compressive strength even after a one month soaking time. To elucidate the geopolymerization mechanism, microscopic techniques such as SEM/EDS and XRD are also applied to investigate the microstructure, the elemental and phase composition of geopolymerization products. The findings of the present work provide a novel method to apply fly ash as a high strength water-resistant precast construction material.
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M3 - Conference contribution
AN - SCOPUS:85084013025
T3 - 2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
BT - 2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
PB - Society for Mining, Metallurgy and Exploration
T2 - 2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
Y2 - 24 February 2019 through 27 February 2019
ER -