Abrégé

The invention relates to a relates to an acid activated mixture comprising: an acid activated magnesium-iron solid solution silicate filler; cementitious material; and carbon dioxide (CO2); wherein the magnesium-iron solid solution silicate filler has at most 7% free water, and wherein the magnesium-iron solid solution silicate filler is between 4% and 55% by weight of cementitious material. The invention further relates to a method for producing an acid activated cement slurry comprising the steps: making a slurry comprising a non-acid activated or acid activated magnesium-iron solid solution silicate filler, water, and cementitious material; adding carbon dioxide (CO2) to the slurry; and optionally adding an acid to the slurry; wherein the magnesium-iron solid solution silicate filler is between 4% and 55% by weight of cementitious material. The invention also relates to a process for making an acid activated structure, an acid activated cement slurry obtainable by the method, use of the acid-activated cement slurry for making an acid activated structure, aspect, and an acid activated structure obtainable by the process.

Classes IPC  ?

• C04B 38/10 - Mortiers, béton, pierre artificielle ou articles de céramiques poreuxLeur préparation en utilisant des agents moussants
• C09K 8/46 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits contenant des liants inorganiques, p. ex. ciment Portland
• C04B 20/02 - Traitement
• C04B 40/06 - Inhibition de la prise, p. ex. pour mortiers du type à action différée contenant de l'eau dans des récipients frangibles
• C04B 111/22 - Résistance à la carbonatation
• C04B 111/76 - Utilisation à des températures inférieures à zéro
• C04B 103/12 - Accélérateurs de prise