Hello,

I am still trying to come up with a lightweight concrete mix (other than hypertufa) that isn't real complicated. It was suggested that I contact Grace Industries which I did.

They told me to use a pool aggregate mixed with cement.

It is a air entrained vermiculite. From what I have read I should use a power mixer. Most of my projects are small, that I have been hand mixing in a tub.

Can someone please provide some insight ?? Also, how much of the aggregate to mix with the cement?

Thanks very much.