Rust-Oleum® Repair Mortar is a versatile, single component, micro silica modified repair mortar that contains an integral corrosion inhibitor for concrete repair projects of all types. Requiring only the addition of water, Repair Mortar is a high strength material with an extended working time for ease of placement. It is similar in appearance to concrete and is suitable for use as a topping or repair mortar for concrete structures from 1 inch to full depth.