Work Safely with Concrete and Cement 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...