What is the preferred method for cleaning dust from drilled holes before adhesive anchor installation?

The preferred method for cleaning dust from drilled holes before adhesive anchor installation is to clean using a wire brush or compressed air. This approach is effective because it removes all loose debris, dust, and any contaminants that may interfere with the bonding process of the adhesive anchor. Proper cleaning ensures that the adhesive can make a strong, uninterrupted bond with the substrate, which is crucial for the performance and load-bearing capacity of the anchor.

Using a wire brush or compressed air effectively reaches into the drilled holes, providing a thorough clean that is necessary for optimal adhesion. Other methods, such as using a damp cloth, may not be as effective because they can leave moisture in the holes, which could also impede adhesion. Leaving the holes without cleaning risks the integrity of the bond due to dust and debris that can act as a bond breaker. Sweeping with a broom also does not adequately address the need to clean the interiors of the holes and may only push dust around rather than removing it. Thus, cleaning with a wire brush or compressed air not only prepares the holes in the best possible way but is in line with industry best practices for adhesive anchor installation.