I will shortly be pouring some concrete into a round formwork for an entrance gate pillar. After that, the pillar will be plastered.
What's the best concrete mix and material to use that will create a rough enough surface that plaster will stick to? I was thinking 1 concrete to 6 builders gravel. Any advice would be greatly appreciated.
Also, what mix/material would you recommend for the foundation. Pillar will be 5ft by 2.5ft.