Formula of mixing Gilsonite into bitumen to make cheap and high quality bitumen membrane sheet.
If you consider each batch of mixing Gilsonite and Bitumen based on 8 tons then you need to blend:
1. 3MT equal 37.5% bitumen 160-220
2. 1.5MT Gilsonite equal to 18.5%
3. 3MT Talc powder equal to 37.5%
4. 0.5MT waste plastic