Can fly ash or ground slag be used in cellular concrete?
Yes. Just as in standard density concrete, the cure times might be extended. The maximum amount which can be used depends on the application. It is generally recommended that only type F fl y ash be used, rather than the higher carbon type C. High carbon materials may tend to break down the foam. Low density cellular concrete with high amounts of any fl y ash may shrink excessively after placement due to the action of free carbon. Most other cementitious materials may also be used in cellular concrete.
