Message #415268

[Peachcreek]

Flyash is good when mixed into a sandy soil as a binding agent... Used in concrete it is nothing more than a filler to cheapin up the mix. It WILL cause the concrete to set up very slow at 30% ash. If u use it just poured out on top of the dirt you have a powder that really aint good for much unless you mix it into your subgrade. It does little to nothing on clay subgrade, if dealing with clay you need to use lime as a binder.