Application Methodology
Remove dust, flakes, or other foreign particles by jet or dry air and clean the surface mechanically or by grinding to make it smooth before application. Thoroughly dust down the surfaces & Remove the majority of rust scales from the surface of rusting steel structure/reinforcement by wire brush, chipping, or grinding. Ensure that the substrate temperature is in the range of 5°C - 40°C. Apply RR 18C on the affected surface using a cotton waste swab or brush. Leave the surface coated with RR 18C for at least 15 to 30 minutes. Rusty surface will change its color to original blackish steel, then remove the loose rust particles by scrubbing or simple dusting with a brush. If any rust remains on the surface of the steel, apply a second coat of RR 18C on bone-dry first coat. When applied over corroded reinforcement steel, wash the surface with clean water before taking up further works of repairs. RR 18C is acidic in nature, ensure that traces of acid are completely removed with a water jet before applying coatings or primers. Do not apply RR 18C to clean rusted rebars in critical RCC structures.