Characterization of Fly Ash and Metakaolin Blend Geopolymers under Ambient Temperature Condition

Joint Conference on Green Engineering Technology & Applied Computing 2019

工业技术（总论）;计算机科学

Zulkifly, Khairunnisa^1 ; Cheng Yong, Heah^1 ; Mustafa Al Bakri Abdullah, Mohd^1 ; Yun Ming, Liew^1 ; Victor Sandu, Andrei^2 ; Fatimah Azzahran Abdullah, Siti^1

Centre of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia^1

Faculty of Materials Science and Engineering, Gheorghe Asachi Technical University of Iasi, Romania^2

关键词: Crystalline phase;    Crystalline phasis;    Mix proportions;    NaOH concentration;    Sodium silicate;    Solid-to-liquid ratio;    Temperature conditions;    XRD analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/551/1/012086/pdf
DOI  :  10.1088/1757-899X/551/1/012086

来源: IOP

【 摘 要 】

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.