how do you prepare cement with exposed aggregates
After the cement has dried slightly you wash and scrub off the top layer of cement to expose the aggregate. Timing is very important too soon and you wash out pits and too late will not wash off anything. If you have never done it you should get someone that has to teach you how.
Finish the same as a regular slab and when it has started to set pour water on it and use a stiff brush or broom to remove the top layer of cement. Then wash off good.
