| 摘要 |
The present invention relates to a method for evaluating the alkali activation reactivity of a fly ash using a selective melting technique. In the method of the present invention, fly ash is obtained which is alkali-activated by means of a geopolymer reaction between a raw material fly ash and an alkali activating agent. Infusible residues are obtained from dried solids of an inert fly ash which is not melted when the alkali-activated fly ash is melted by means of diluted hydrochloric acid. A fly ash alkali activation reacting rate can be induced using the infusible residues. In the selective melting method of the present invention, excellent relevance is established between fly ash activation reacting rates based on compression strength irrespective of the kind of fly ash, the concentration of an alkali activating agent solution, and the kind of alkali activating agent solution, so that a geopolymer can be provided from a fly ash having excellent reactivity. |
