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- Title
EFFECT OF SILICA FUME AND ALUMINA ADDITION ON THE MECHANICAL AND MICROSTRUCTURE OF FLY ASH GEOPOLYMER CONCRETE.
- Authors
FONG SUE MIN; HEAH CHENG YONG; LIEW YUN MING; AL BAKRI ABDULLAH, MOHD MUSTAFA; RAZI, HASNIYATI MD; FOO WAH LOW; NG HUI-TENG; NG YONG-SING
- Abstract
This paper discussed the effect of the addition of silica fume (2 wt.% and 4 wt.%) and alumina (2 wt.% and 4 wt.%) on the properties of fly ash geopolymer concrete. the fly ash geopolymer concrete achieved the highest 28-day compressive strength with 2 wt.% of silica fume (39 MPa) and 4 wt.% of alumina (41 MPa). the addition of 2 wt.% of silica fume increased the compressive strength by 105% with respect to the reference geopolymer (without additive). On the other hand, the compressive strength surged by 115% with 4 wt.% of alumina compared to the reference geopolymer. The addition of additives improved the compactness of the geopolymer matrix according to the morphology analysis.
- Subjects
SILICA fume; FLY ash; ALUMINUM oxide; COMPRESSIVE strength; CONCRETE; MICROSTRUCTURE
- Publication
Archives of Metallurgy & Materials, 2022, Vol 67, Issue 1, p197
- ISSN
1733-3490
- Publication type
Article
- DOI
10.24425/amm.2022.137489