Posted: Sat Oct 16, 2004 4:10 am
can anyone tell me the ratios of sand, gravel, and concrete in making an exposed aggregate? thanks
I think you mean sands, coarse aggregate and cement.
There's no fixed 'one-size-fits-all' mix that can be used to create an exposed aggregate finish. You need to determine which method of exposing the aggregate will be used, and then identify the type, size and nature of the aggregate that will be bared for all to see. In many cases, we have to do a number of trial panels to detrmine which mix ratio gives best results.
Start with a basic C30-equivalent mix, as described on the Concrete Mixes page, and adapt it to suit your needs.