How to Remove Hardened Cement from a Car?
1 Answers
Mainly, hot water can react with a certain component in the cement, making it brittle. First, cover the cement spots with a towel, pour hot water over them, and wait a while for the cement to become brittle. First, you need a small spray bottle (like a gel bottle) filled with white vinegar. Spray it on the cement, wait a while, then rinse with water. Repeat a few times. You need to buy a bottle of oxalic acid, then apply it to the cement spots with a towel. Wait a few minutes, scrub with a brush, then rinse with water. The effect is good. Oxalic acid is somewhat corrosive, so safety precautions are necessary when using it.