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Método para fabricar aglutinantes que endurecen por hidratación y carbonatación
Método para fabricar un aglutinante que comprende un material hidratable, que comprende las etapas: - proporcionar un material de partida a partir de una o más materias primas convertibles por atemperado a 600 hasta 1200 °C en el material hidratable, en el que el material de partida tiene una relación molar de Ca/Si de 0,5 a 1,8 y no contiene o contiene hasta un 30 % en peso de otros elementos distintos de CaO y SiO2 con respecto a la masa total calculada como óxidos, - atemperar el material de partida a una temperatura en el intervalo de 600 a 1200 °C durante un tiempo de residencia de 1 minuto a 5 horas para proporcionar el material hidratable que contiene no más de un 10 % en peso de silicato de monocalcio y al menos un 15 % en peso de fases hidratables en forma de cal y silicato de dicalcio, en el que al menos un 50 % de las fases hidratables cristalinas son silicato de dicalcio, en el que el tiempo de residencia y la temperatura de atemperado se adaptan para obtener dicho material hidratable por conversión de no más de un 80 % en peso del material de partida, y - enfriar el material hidratable para proporcionar el aglutinante que comprende el material hidratable.
Method for manufacturing a binder comprising a hydratable material and a building element from the binder comprising the steps: - providing a starting material from one or more raw materials convertible by tempering at 600 to 1200 °C into the hydratable material, wherein the starting material has a Ca/Si molar ratio from 0.5 to 1.8 and contains no or up to 30 % by weight of other elements than Ca and Si with regard to the total mass calculated as oxides, - tempering the starting material at a temperature in the range from 600 to 1200 °C during a residence time from 1 min. to 5 hours to provide the hydratable material containing not more than 10 % by weight monocalcium silicate and at least 15 % by weight hydratable phases in the form of lime and dicalcium silicate, wherein at least 50 % of the hydratable phases are dicalcium silicate, wherein the residence time and the tempering temperature are adapted to obtain the said hydratable material by converting not more than 80 % by weight of the starting material, - cooling the hydratable material to provide the binder comprising the hydratable material. For manufacturing the building element the further steps of - mixing the binder with water and optionally one or more of aggregate, additves, admixtures to obtain a binder paste - placing the binder paste - hydrating the binder paste until the amount of bound water is at least 1 g/100 g dry binder and - carbonating the binder paste until until the amount of additionally bound carbon dioxide is at least 150 % of the initially bound water mass and/or the strength exceeds 2 MPa while still keeping the bound water at least 50 % of the initially bound water.
Método para fabricar aglutinantes que endurecen por hidratación y carbonatación
Método para fabricar un aglutinante que comprende un material hidratable, que comprende las etapas: - proporcionar un material de partida a partir de una o más materias primas convertibles por atemperado a 600 hasta 1200 °C en el material hidratable, en el que el material de partida tiene una relación molar de Ca/Si de 0,5 a 1,8 y no contiene o contiene hasta un 30 % en peso de otros elementos distintos de CaO y SiO2 con respecto a la masa total calculada como óxidos, - atemperar el material de partida a una temperatura en el intervalo de 600 a 1200 °C durante un tiempo de residencia de 1 minuto a 5 horas para proporcionar el material hidratable que contiene no más de un 10 % en peso de silicato de monocalcio y al menos un 15 % en peso de fases hidratables en forma de cal y silicato de dicalcio, en el que al menos un 50 % de las fases hidratables cristalinas son silicato de dicalcio, en el que el tiempo de residencia y la temperatura de atemperado se adaptan para obtener dicho material hidratable por conversión de no más de un 80 % en peso del material de partida, y - enfriar el material hidratable para proporcionar el aglutinante que comprende el material hidratable.
Method for manufacturing a binder comprising a hydratable material and a building element from the binder comprising the steps: - providing a starting material from one or more raw materials convertible by tempering at 600 to 1200 °C into the hydratable material, wherein the starting material has a Ca/Si molar ratio from 0.5 to 1.8 and contains no or up to 30 % by weight of other elements than Ca and Si with regard to the total mass calculated as oxides, - tempering the starting material at a temperature in the range from 600 to 1200 °C during a residence time from 1 min. to 5 hours to provide the hydratable material containing not more than 10 % by weight monocalcium silicate and at least 15 % by weight hydratable phases in the form of lime and dicalcium silicate, wherein at least 50 % of the hydratable phases are dicalcium silicate, wherein the residence time and the tempering temperature are adapted to obtain the said hydratable material by converting not more than 80 % by weight of the starting material, - cooling the hydratable material to provide the binder comprising the hydratable material. For manufacturing the building element the further steps of - mixing the binder with water and optionally one or more of aggregate, additves, admixtures to obtain a binder paste - placing the binder paste - hydrating the binder paste until the amount of bound water is at least 1 g/100 g dry binder and - carbonating the binder paste until until the amount of additionally bound carbon dioxide is at least 150 % of the initially bound water mass and/or the strength exceeds 2 MPa while still keeping the bound water at least 50 % of the initially bound water.
Método para fabricar aglutinantes que endurecen por hidratación y carbonatación
SKOCEK JAN (author) / ZAJAC MACIEJ (author) / BOLTE GERD (author) / BEN HAHA MOHSEN (author)
2022-02-16
Patent
Electronic Resource
Spanish
IPC:
C04B
Kalk
,
LIME
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