Open AccessCharacterization of Fly Ash and Metakaolin Blend Geopolymers under Ambient Temperature Condition
Author(s) -
Khairunnisa Zulkifly,
Heah Cheng-Yong,
Mohd Mustafa Al Bakri Abdullah,
Liew Yun-Ming,
Andrei Victor Sandu,
S. F. A. Abdullah
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/551/1/012086
Subject(s) - metakaolin , fly ash , geopolymer , materials science , sodium silicate , sodium hydroxide , chemical engineering , amorphous solid , composite material , chemistry , organic chemistry , engineering
This paper presents a characterization of fly ash and metakaolin blend geopolymers of the optimize mix proportion of 10 M NaOH concentration mixed with the solid-to-liquid ratio of 1.2 and sodium silicate and sodium hydroxide ratio of 2.6. The combination of amorphous and crystalline phase in the fly ash (FA) and metakaolin (MK) blend geopolymers showed a positive effect on the resultant geopolymers. The formation of new crystalline phases which is sillimanite as presented by XRD analysis. Fly ash and metakaolin blend geopolymers showed the presence of geopolymer bonding at around 1390 cm -1 and 960 cm -1 . This paper discloses effect of blending fly ash and metakaolin in the synthesis promotes the continual hydration of the geopolymers.