For particularly stubborn stains rinse the acid away with a pressure washer.
Clean rust off cement driveway.
How to remove rust from cement method 1 of 3.
Finally you can purchase a rust remover product.
Pour gallon of water in a pot.
Fighting major rust stains.
Trisodium phosphate is an irritant to your skin.
In hindsight a longer soaking would be a good idea.
Lemonade rust stain removal.
Remove the surface dirt and debris from your driveway by sweeping the area with a stiff.
How to remove the rust stains from a concrete driveway vinegar rust stain removal.
Mix 1 2 cup of trisodium phosphate into 1 2 gallon of hot water until the trisodium phosphate has dissolved.
Using the scrub brush scrub the stain using a considerable amount of pressure.
Then carefully pour the mix onto the rust stain and gently scrub the surface of the concrete with a stiff bristle nylon brush.
For cleaning concrete pour the lemon juice or vinegar directly onto the rust stain and allow it to sit for ten minutes so the ingredients can fully penetrate the rust.
Rinse and wash the concrete with soap and water before beginning.
Scrub as much as you can but if it s too deep there s not much you can do.
Place the pot on the stove and bring the water to a boil.
Use a brush that s appropriate for your concrete to avoid damaging it.
By the way my rust stain issues are now over because i added a water softener which removes the iron from the well water.
Be very careful as it tends to lighten the concrete leaving a rust free but noticeably lighter spot where you used it.
Wear goggles and rubber gloves to protect your eyes and your hands.
Follow the instructions on the package exactly.
Allow the driveway cleaning solution to remain on for a few minutes.
Rinse the area off with cold water.
Rinse and repeat if the concrete.
Pour the vinegar over the stain let sit for 10 minutes then scrub with a stiff nylon brush.
Make sure the surface is clean apply the rust remover or acid following the instructions and safety precautions on the bottle let it sit for five to 10 minutes then scrub and rinse.
Pour enough of the solution onto the rust.