Now showing 1 - 2 of 2
  • Publication
    Effect of silica fume and alumina addition on the mechanical and microstructure of fly ash geopolymer concrete
    ( 2022-01-01)
    Min Fong Sue
    ;
    ; ; ;
    Razi H.M.
    ;
    Low F.W.
    ;
    Ng Hui Ten
    ;
    Ng Yong Sin
    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.
      1
  • Publication
    EFFECT OF SILICA FUME AND ALUMINA ADDITION ON THE MECHANICAL AND MICROSTRUCTURE OF FLY ASH GEOPOLYMER CONCRETE
    ( 2022-01-01)
    Min Fong Sue
    ;
    ; ; ;
    Razi H.M.
    ;
    Low F.W.
    ;
    Ng Hui Ten
    ;
    Ng Yong Sin
    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.
      3