Abstract
Results are provided for a study of the effect of adding cenospheres (coal combustion waste) on hydration of alumina cement and exothermic reaction parameters. It is established that an increase in addition of cenospheres retards cement hydration, and reduces specimen density after firing at 1200°C up to 40%, strength up to 60% and shrinkage up to 95% compared with control specimens. With respect to parameters for the relationship of strength and density an amount of 5 – 10% of cenospheres is the optimum.
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