ASTM D4261-05 (R2018) PDF Download

The ASTM D4261-05 (R2018) standard provides guidelines for the preparation of concrete masonry unit surfaces before the application of coatings. This practice is applicable for surfaces intended for light duty service, exposure to water and chemical solutions, radiation exposure, decontamination, and repeated washdowns with alkaline cleaners.

The standard outlines various procedures for surface cleaning, including vacuum cleaning, air-blast cleaning, water cleaning, detergent water wash, steam cleaning, and mechanical cleaning. These methods are aimed at removing dust, dirt, mortar spatter, oil, and grease from the concrete masonry units, ensuring a clean substrate for the coating application.

It is important to note that while the practice may alter the surface profile of the concrete, its primary objective is to clean the surface. This standard serves as a valuable resource for professionals involved in the coating of concrete masonry units, providing guidance for effective and appropriate surface cleaning techniques.