Many of us in North America are familiar with the use of fly ash from coal fired power plants in cement, but many parts of the world have a much more prevalent source of ash for cement – sugar production. A number of facilities in Asia and South America have large supplies of sugar waste ash available.
Now, from the Niels Bohr Institute in Copenhagen comes news reports of a detailed study of the bonding between water, cement, and ash in a mixture. Overall, the mixture resembles many pozzolanic cements utilizing other flyashes, with a substitution of approximately 20% of sugar waste ash for cement. This opens up another ash source for use in cement mixtures in developing parts of the world.