You mentioned that no accelerators and retarders can be used in the concrete floors if they are to be acid washed. However, can fibers be used to strengthen the concrete? Megan, Hayden, CO
Fibers can be used. We use fibers in our countertops and formed objects. The finished surface should be free of fibers. Big Al knows that the care that goes into pouring, trowing and curing a concrete slab has a big effect on the final product. Slabs that are poured on hot days and dry out before the concrete is cured can cause some interesting things to happen with the acid stain. The acid stain is mostly water and water is the one thing that the dry concrete craves to continue it's hydration. Once the concrete has the acid applied it resumes curing. This can cause an uneven appearance. An additional coat of acid can even things out but that can add a day to a project. Big Al suggests talking to you contractor about keeping the concrete slab wet during the initial curing phase.A good article on concrete slab curing can be found here.
http://www.concretenetwork.com/concrete/slabs/curing.htm
Always,
Big Al
