Improving ash quality

Published 01 February 2016

As governments consider the reduction of power generation in coal-fired power stations for environmental reasons, this article looks at the impact of this measure on the supply of fly ash to the cement industry. However, in the short- to medium term the availability of fly ash seems to be robust as sufficient stocks appear present, either in landfills or in fly ash lagoons.

Coal-fired power stations have long supplied fly ash to cement plants as an addition to Portland cement

Ash from coal-fired power stations, known as fly ash or pulverised fuel ash, has been used as an addition to Portland cement for many years. It has benefits in concrete production due primarily to the reduction in water demand which results from its use and also to improvements in durability of concrete made including ash.

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