Geopolymer composition and method for producing same

Abstract

Provided is a geopolymer composition which contains: an active filler that contains a fine carbonated slag powder and fly ash; an alkali source; and water. The fly ash contains 0.1 mass% to 4.5 mass% inclusive of CaO and 24.0 mass% to 40.0 mass% inclusive of Al2O3. Also provided is a method for producing the geopolymer composition.

Claims

1. The active filler comprises carbonated slag fine powder and fly ash, an alkali source, and water, wherein the fly ash contains 0.1% to 4.5% by mass of CaO, and Al ２ O ３ A geopolymer composition containing 24.0% by mass or more and 40.0% by mass or less of the above.

2. Compressive strength at 1 day of age is 10.0 N / mm². ２ The geopolymer composition according to claim 1, as described above.

3. The active filler comprises carbonated slag fine powder and fly ash, and a powdered alkali source comprising at least one selected from alkali metal silicate powder and alkali metal carbonate powder, wherein the fly ash contains 0.1% to 4.5% by mass of CaO, and Al ２ O ３ A powdered geopolymer composition containing 24.0% by mass or more and 40.0% by mass or less of the above.

4. The powdered geopolymer composition according to claim 3 is mixed with water and cured, and the compressive strength at 1 day of age is 10.0 N / mm². ２ A method for producing a cured geopolymer, comprising producing a cured product as described above.

5. A method for producing a geopolymer composition comprising an activated filler containing carbonated slag fine powder and fly ash, an alkali source, and water, wherein the raw material fly ash contains 0.1% by mass or more and 4.5% by mass or less of CaO, and Al ２ O ３ A method for producing a geopolymer composition, comprising a component confirmation step to confirm that it is a specified fly ash containing 24.0% by mass or more and 40.0% by mass or less of the specified substance.

6. If, in the component confirmation step, the raw material fly ash is confirmed to be the specified fly ash, the method for producing the geopolymer composition according to claim 5, further comprising a mixing step of mixing the raw material fly ash, carbonated slag fine powder, alkali source, and water.

7. A method for producing a geopolymer composition according to claim 5, comprising: a component adjustment step in which, if the raw material fly ash is found to be non-standard fly ash in the component confirmation step, a component adjustment agent is added to the non-standard raw material fly ash to make it standard fly ash; and a mixing step in which the raw material fly ash whose components have been adjusted in the component adjustment step is mixed with carbonated slag fine powder, an alkali source, and water.

8. A method for producing a cured geopolymer, comprising curing a geopolymer composition produced by the manufacturing method described in any one of claims 5 to 7.

9. The method for producing a geopolymer hardened body according to claim 8, which produces a hardened body having a compressive strength of 10.0 N / mm or more at 1 day of material age. ２ ​ 10. Contains 0.1% to 4.5% by mass of CaO, and Al ２ O ３ A method for producing specified fly ash containing 24.0% by mass or more and 40.0% by mass or less of a certain substance, wherein a component adjusting agent is added to non-specified raw fly ash to produce specified fly ash, a method for producing fly ash for the manufacture of a geopolymer composition.

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