How To Remove Rust Stains From Concrete. Ive always cut it 91 with water. The near concentrated form of citric acid is great for removing rust stains.
You can repeat the process if needed once the concrete has dried many stains take multiple washes before the rust completely disappears. Work in small circles to remove as many of the rust stains as possible. To remove stains carefully handle the hydraulic acid and hydraulic acid is the most effective way to remove the rust stains.
Leave the solution on the concrete from 10 to 20 minutes.
How to remove rust from concrete using WD-40 Blog Categories If you often park in a garage or driveway have a workshop with a concrete floor or have outdoor furniture made from metal chances are at some stage youll see a rust stain on the concrete that seems impossible to get out. Pour or spray lemon juice onto the stain and let it sit for 10 minutes then scrub away the stain using a wire brush before rinsing with cold water. Scrub the surface of the concrete with a brush. If youre removing rust from smooth or painted concrete it might pay to use a stiff bristled nylon brush instead of wire.