Cutting and Grinding Shrouds

Concrete is a common building material that can be used in a variety of ways. It’s generally made by combining cement, sand, aggregate (small stones) and water. When these materials are mixed in the correct amounts and if they’re further strengthened by adding re-bar, fiberglass strands or plastic rods, the concrete can be used to build roads, bridges, buildings, septic tanks, floors, concrete blocks, and even countertops for homes. However, anyone who uses or works around concrete and cement should understand the potential health hazards and follow safe handling procedures to prevent harmful exposures.

There are some applications of concrete that necessitate the addition of other materials that could adversely affect health if improperly handled. Additions may include alkaline compounds (such as lime) that are corrosive to human tissue, small amounts of crystalline silica that are abrasive to skin and causes damage to lungs or small amounts of chromium that can cause allergic reactions. The risk of illness or injury from these additions in the concrete depends on the level and length of exposure and the sensitivity of the individual.

The definition of a cutting and grinding shroud is a protective casing or cover.  How is this relevant to our industry?

The use of a handheld grinder to smooth or cut the surfaces of concrete or masonry materials can generate respirable crystalline silica dust. When inhaled, the small particles of silica can irreversibly damage the lungs. Dust control in the form of a shroud can be used to minimize the amount of airborne dust when using handheld grinders.

There are two methods for controlling dust when operating handheld grinders for either grinding or cutting concrete surfaces.  For outdoor use, a grinder with an integrated water delivery system can be used.  Alternatively use a grinder equipped with a commercially available shroud and vacuum dust collection system.

Our cutting and grinding shrouds has to be on your shopping list before starting any project where you will be doing grinding work with a hand held grinder.