METODO PARA PROPORCIONAR UNA MEZCLA DE CEMENTO DE FRAGUADO RAPIDO QUE COMPRENDE MEZCLAR AGUA, UN POLVO REACTIVO DE CEMENTO QUE CONTIENE CEMENTO HIDRAULICO Y UNA CANTIDAD ACELERADORA DEL FRAGUADO DE ALCANOLAMIDA Y POLIFOSFATO; Y COMPOSICION PARA PREPA

摘要

A method of making a rapid setting composition for cement boards is disclosed. Compositions including portland cement, fly ash, gypsum, alkanolamine and phosphate are disclosed. A synergistic interaction between the alkanolamine and phosphate increases the effectiveness of accelerating reactions thus allowing for quick setting and increased early-age compressive strength compositions.