Synthesis of geopolymer composites from a mixture of ferronickel slag and fly ash

17th IUMRS International Conference in Asia

Liu, Yun^1 ; Zhang, Kang^1 ; Feng, Enjuan^2,3 ; Zhao, Hongyi^2,3 ; Liu, Futian^1,3

School of Material Science and Engineering, University of Jinan, Jinan

250022, China^1

Shandong Hongyi Technology Co. Ltd., Linyi

276034, China^2

Key Laboratory of Cement Additives of Shandong Province (Prepare), Linyi

276034, China^3

关键词: Alkaline activation;    Amorphous aluminosilicate;    Fly ash content;    FTIR analysis;    Geopolymer composites;    Hydration reaction;    Phase formations;    Three-dimensional networks;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/182/1/012038/pdf
DOI  :  10.1088/1757-899X/182/1/012038

来源: IOP

【 摘 要 】

The synthesis of geopolymers using ferronickel slag and fly ash under alkaline activation was studied. In order to study the effects of different fly ash content on the mechanical properties of the geopolymers produced, the compressive strength of samples was tested at 3, 7, 28 days. The results showed that when the fly ash content was 40%, the compressive strength reached the highest (110.32MPa) at 28 days. XRD analysis showed that the ferronickel slag geopolymers had amorphous aluminosilicate phase formation, indicating that the hydration reaction occurred. FTIR analysis showed the reaction of the geopolymers generated at Si-O-T (Si, Al) and Al-O-Si three-dimensional network. In SEM images, the structure of the geopolymers with 40% fly ash was more compact and cohesive.