Acetone: The concrete is to be soaked in acetone and then you need to wait to get them soft so that they can be scrapped off.
Heat Gun: Evaporate and peel off the epoxy from the concrete surface, at a single time small sections are done part by part
Paint Thinner: The same method should be used as used with acetone.
Sanding: This option is an extreme category, but the top layer of concrete can be covered with sand. Doing so, will help in the removal of traces of acrylic and in turn a smooth surface will be created for staining.
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