1. To provide a cement mixture consisting of 75 to 100 volatile ash, citrate and light additives with a weight to reactive powder ratio of 0.17-0.35:1; components used for making cement boards;

摘要

A method of making a rapid setting lightweight cementitious composition with improved compressive strength for products such as boards is disclosed. The method mixes fly ash, alkali metal salt of citric acid and lightweight aggregate with water. Compositions which include fly ash, alkali metal salts of citric acid and lightweight aggregate are also disclosed.