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Oh, Jae Eun
Nano-AIMS 구조재료 연구실
Research Interests
  • Concrete Materials, Construction Materials, Cementless Binders

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Mechanical and microstructural dissimilarities in alkali-activation for six Class F Korean fly ashes

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Title
Mechanical and microstructural dissimilarities in alkali-activation for six Class F Korean fly ashes
Author
Jun, YubinOh, Jae Eun
Issue Date
2014-02
Publisher
ELSEVIER SCI LTD
Citation
CONSTRUCTION AND BUILDING MATERIALS, v.52, pp.396 - 403
Abstract
This study presents the preliminary investigation for the microstructural characteristics of the alkali-activated fly ashes, synthesized using six different Korean Class F fly ashes, to address the large mechanical strength differences between the activated ashes using compressive strength testing, XRF, XRD, and SEM/EDS (YAG BSE, SE and elemental mapping). The results show that although the original fly ashes are not much different in XRD and XRF data, the reaction products after activation were dissimilar between the activated ashes. Particularly, the activated sample containing Al-rich chabazite produced much higher compressive strength than the other samples with zeolite A-Na. The SEM/EDS results exhibit that the activated fly ashes tended to have the higher compressive strengths as the reaction products possessed the lower Si/Al ratios down to one.
URI
https://scholarworks.unist.ac.kr/handle/201301/9707
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84890285782
DOI
10.1016/j.conbuildmat.2013.11.058
ISSN
0950-0618
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UEE_Journal Papers
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