Shifting production, use patterns temper fly ash, CCP recycling rates

Supply dynamics in key regional markets, paralleling coal-fueled power plant closures, spurred an 11 percent year over year decline in fly ash consumption in concrete, according to the American Coal Ash Association’s (ACAA) just-released “Production and Use Survey” for 2018. Concrete-grade ash accounted for 12.5 million of the 59.4 million tons of coal combustion products (CCP) beneficially used last year, the latter figure down 8 percent or 9.1 million tons from the 2017 ACAA survey. Use of all grades of CCP in cement production declined 26 percent in 2018, to 6.4 million tons.