A lot of oil has seeped into the cement floor; how can it be restored to its original state?
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Gentlemen: If a cement floor absorbs a lot of oil, how can it be treated to restore it to its original state? Can it be completely chiseled to use as cement?
Washing it with kerosene will help a bit; if that doesn’t work, apply another layer of mortar on the concrete floor.
Carbon tetrachloride will enclose the oil and cause it to float; you can use carbon tetrachloride to \"push\" the oil into the gutter, after which the carbon tetrachloride will evaporate on its own. Remember to bring a gas mask
Scrub the floor with laundry detergent and an iron brush, then rinse it with high-pressure fire water
Rinse it with oxalic acid, and then wash it with clean water·····