Is concrete with fly ash, blast furnace slag, cenospheres or silica fume available in bags?
Yes. The problem is lack of labeling denoting the bag contains recycled content. Two brands that contain recycled content are Basalite and Quikrete. If the cement was produced in an area with fly ash, blast furnace slag, cenospheres, or silica available, the Basalite and Quikrete bags contain the recycled ingredient. If produced in an area where the specified recycled material is not available, the bags do not contain it.
Basalite production codes that denote fly ash and/or blast furnace slag is in the product beginning either with 1406 or 1409. The production codes are printed on the bag in front of the date.
To date the Quikrete production areas we know are producing bags of cement with fly ash are Fremont, CA; Charlotte, NC; Nashville, TN; Pounding Mill, VA; and Martinsville, VA. In addition, Quikrete has a "Green Concrete Mix" which contains 50% or more recycled aggregate such as recycled concrete.
We have asked both Basalite and Quikrete to label their bags denoting whether they contain the specified recycled content.