Posted on March 31,2015 by Peterbilt in Kitchen or bath addition
**Fly ash can replace some of the Portland cement in a concrete mix**
Manufacturing Portland cement uses a lot of energy and produces about 6% of the world’s carbon dioxide emissions. Replacing the 12% Portland cement mix in concrete with 15% to 25% Type C or Type F fly ash are fairly common, and mixes up to 60% are sometimes used. Contact your local Department of Transportation for advice about mixtures they've tested; this will help when talking to your building inspector and concrete contractor.