Hi Thomas - When you get the Silimix get a container and scale and place some in the container (tamp to neat fill) and weight it. Then add water until neatly filled and weight it. Publish ratio here please.

This will tell you the Silimix void content. You can convert your water weight to epoxy weight via a volume calc or density ratio. This will tell you the max weight ratio of epoxy to use... As explained before weight ratios are not absolute. If you have a light/heavy aggregate then weight ratios for epoxy are different. Even the epoxy can be 1000-1300kg/m3 so that's a variable as well... Peter