Mechanical activation of two different types of fly ash and their effect on alkali activation.

International Conference Building Materials, Products and Technologies

材料科学;工业技术（总论）

Marcin, M.^1 ; Sisol, M.^1 ; Brezani, I.^1 ; Behunova, D.^2

Technical University of Koice, Faculty of Mining Ecology, Process Control and Geotechnologies, Institute of Earth Resources, Department of Mineral Processing, Park Komenského 19, Koice

04200, Slovakia^1

Institute of Geotechnics SAS, Watsonova 45, Koice

04001, Slovakia^2

关键词: Activated fly ash;    Activated materials;    Alkali activation;    Compressive and flexural strengths;    Different proportions;    Hot air;    Laboratory conditions;    Mechanical activation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/583/1/012024/pdf
DOI  :  10.1088/1757-899X/583/1/012024

来源: IOP

【 摘 要 】

The article aim is to analyze the influence of mechanical activation of a fly ash, with different proportion of mechanically activated and not mechanically activated material on alkali activation. The paper describes fly ash based geopolymers and their mechanical properties. Fly ashes were mixed in four different ratios with mechanically activated fly ash. Activation solution was constant in all specimens. Compressive and flexural strengths of the hardened product were tested after 7 and 28 days of the storage in laboratory conditions and samples were cured after activation in hot air chamber for 6 hours in 80°C temperature. The results show how mechanical activation of materials affects their strengths with highest amount achieved was 44 MPa.