Surface preparation: The surface shall be cleaned thoroughly of all contaminants like dust, traces of curing compound, oil, grease. All surface imperfections and protrusions are to be removed and repaired. Structurally unsound and friable concrete must be removed and repaired with a suitable concrete repair mortar.
Priming: Primer is always recommended prior to coating as it not only penetrates into the concrete pores and seals the substrate. It also acts as an adhesion promoter for further coatings. The primer coat can be made in the site by diluting Rheoseal RBE350 by adding 25% water. The primer may be applied by a brush, roller or airless spray. Allow the primer to dry before any further coats are applied. However, if the primer after application is left open for more than 24 hours after it becomes dry, clean the surface of any settled dust and apply a fresh coat of the primer.
Application: Stir the contents of the drum thoroughly prior to application to remove any sediment. The application can be done with a roller, brush or squeegee.Apply the coating at a coverage rate of 1-3m2/L/coat. Depending on the dry film thickness required. Do not apply RHEOSEAL RBE350 to outside areas in wet weather or when rain is expected. Protect freshly applied product from rain until it’s fully cured.
Protection: The coating shall be protected from ongoing site activities and during backfilling from getting damaged by a 150-micron polyethylene sheet.