TREATMENT METHOD OF FLY ASH, FLY ASH CEMENT USING MODIFIED FLY ASH AND CONCRETE COMPOSITION USING THE FLY ASH CEMENT

摘要

PROBLEM TO BE SOLVED: To provide a novel treatment method of a fly ash for producing a chemically modified fly ash which enables favorable expression of compressive strength by a concrete composition when used as a replacement material for Portland cement.

SOLUTION: The fly ash (combustion ash of micronized coal), which is mainly collected by a dust collector etc. in a thermal power plant and is used as a partial replacement material for Portland cement, is contacted with a treatment liquid erosive to the fly ash to carry out a chemical modification treatment on the surface of the fly ash.

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