For any concrete/driveway contractors out there -- we are about to pour a new, large, circular driveway with brick banding. I'm using Davis integral color "light gray" made with 860 iron oxide. When the concrete 3" square sample was sanded, I love the overall color - which has some of the aggregate exposed. Changes the color slightly and driveway looks more "soft" and not that flat "painted concrete look." So how to best accomplish this is my question. Contractor will do a light acid wash and scrub with broom. But they will also use Top Cast #3 if I want, and the local rep for that company will come oversee the job site to ensure proper application and removal for the best #3 finish. Wanting a light sand-wash finish. In the picture below you see a sample they poured of a different color for me, smooth one side, light broom on the other. Cured a week in the heat. Then they used a fairly heavy amount of muriatic acid and scrubbed with broom on one side to help me see how the color would change. Note the splotches. That is a result of the inconsistencies in the aggregate, correct? So my question is, if Top Cast #3 is used, then consistent pressure wash takes it off several hours later, should I expect the Top Cast to produce the same splotchiness? I don't mind soft irregularity and an antiqued sort of look overall, but soft is the key -- I don't want splotches and dabs and dots like a leopard all over. This is a huge circular drive and just walk calm gray that has some interest in the color so it doesn't look so "flat" -- which is why I liked a soft sand aggregate exposure. Can anyone speak to these 2 choices or what I should do? Thanks sincerely!
light broom finish on the right (note it looks more blue and didn't want this).
same concrete on left but with smooth finish and they acid washed/scrubbed with broom.