Eddie, As someone who is on about his 60 something'th gal of Raka epoxy- building a 30' composite boat- I can say nice acquisition for you. I can also tell you, I have some drips/gobs on my wood floor and the concrete garage door aprons. The epoxy shows no sign of deterioration on the crete even though it's all day sun, epoxy needs UV protection long term.
Epoxy on it's own is not very strong. When I add fumed silica (cabosil) in any amount-from a runny mix to a thick paste, it is much tougher to sand or remove. I would want to test some either way. Other additives I've used are milled fibers, graphite ,powdered alum, pulverized limestone, wood flour, talc, phenolic balloons, glass bubbles, etc. Some could have a place in your use ,maybe.
Curious to know which brand you got.
Is it a 2:1, 5:1 and what type hardeners- s,m,f?
I may just go out and apply some different mixes to some concrete blocks on hand. Also maybe with 10 oz cloth as a test...
Skiff Builder