Immobilizing method for carbon dioxide.
Carbon dioxide-immobilized cement = hardened body,
and production method for same

(22) 31.05.2024

(43) 05.12.2024

(57) Provided are: an immobilizing method for carbon dioxide, capable of efficiently immobilizing carbon dioxide in a cement hardened body; a carbon dioxide-immobilized cement hardened body in which carbon dioxide is immobilized by the immobilizing method; and a production method for the carbon dioxide-immobilized cement hardened body. This immobilizing method is for immobilizing carbon dioxide in a cement hardened body and comprises a carbonate supply step for supplying, to the cement hardened body, an aqueous solution of at least one carbonate selected from the group consisting of sodium carbonate, sodium hydrogen carbonate, potassium carbonate, and potassium hydrogen carbonate. This carbon dioxide-immobilized cement hardened body has carbon dioxide-immobilized therein by the immobilizing method. This production method is for the carbon dioxide-immobilized cement hardened body.

(71) Hazama Ando Corporation (JP),
Tokyo (JP), Niigata University (JP)