![]() The stiffer the bristles, the deeper the grooves. A handle-less concrete finishing system (rope brush) is pulled from side to side with ropes instead of being pulled across the surface with a long handle.īroom bristles typically consist of horsehair or synthetics or blends of horsehair and synthetics to create extra-soft, soft, medium and stiff bristles for installing fine, medium and heavy broom textures. Brooms are available with and without long handles. Common broom widths are 1 1/2, 2, 4, 6, and 8 ft. The Basics of Concrete BroomsĬoncrete brooms are finishing tools specially designed to install textures to freshly placed flatwork. A few general best practices can help contractors avoid these disputes and keep projects on track. Therefore, job owner and architect specifications often vary and can lead to costly disputes. While ACI 310R-13 Guide to Decorative Concrete provides the groove depths for fine-, medium- and heavy-broomed finishes, ACI 310R is not a specification and does not provide a means to measure broomed groove depths. in depth and created with a stiff-bristled concrete broom. in depth and created with a horsehair or synthetic bristle concrete finishing broom. Medium-broomed finish-1/32 to 3/64 in.in depth and created with a soft or horsehair bristle concrete finishing broom. Fine-broomed finish-less than 1/32 in. ![]() ![]() In general, there are three broomed finishing categories or more specifically groove depths defined by the American Concrete Institute (ACI) : Brooming is performed after floating or troweling and is required for parking slabs and exterior surfaces including slabs, ramps, walkways, driveways, steps and other flatwork requiring a non-slip surface. Brooming creates a textured or slip-resistant surface with grooves typically installed crosswise (perpendicular) to the direction of travel. Broom finishes, the most common surface textures for exterior flatwork, are created by pulling a broom over freshly placed concrete. ![]()
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