Sold in packages to the unit or by 40 (for a savings of 15%), Harmony Béton polypropylene fibers are recommended to strengthen the impact of concrete strength, reduce shrinkage cracks when drying and avoid the alligator. They also improve the workability and cohesion of concrete (for example shotcrete) and allow for aesthetic siding on specific grounds. They are also particularly recommended to improve the fire resistance of concretes whose compactness is high. At temperatures exceeding 140 ° to 170 °, the fibers melt by creating a three-dimensional network of connected small capillaries allowing the water vapor contained naturally in the concrete to escape, thus avoiding overpressure. This reaction to the heat also allows avoiding spalling of surface of concrete subjected to a rise in temperature. Best used with the Harmony thinner to appropriately modify the workability and plasticity of concrete when incorporating fibers. Our polypropylene fibers are used particularly for: the concrete pavements, parking lots, driveways garden ; concrete, mortar subjected to shocks ; concrete extruded or steep ; mortars of screeds and coatings ; prefabricated products (siding) ; projected mortars ; the improvement of cohesion when the concrete is still fresh. Harmony Béton polypropylenes fibers can perfectly replace anti-cracking mesh.
Our fibers are in the form of fibers, polypropylene, white, 12 mm packaged in pouch pre-measured for ease of proper dosage and proper use. The fibers are intended to replace the mesh anti-cracking, as well as to reinforce concretes, mortars and plasters. Dosing is easy : 1 dose for 1 sack of cement of 35 kg.
Using polypropylene fibres enables you to reinforce concrete and reduce the risk of cracking and crazing. We recommend you to use Harmony Béton water-reducing agent to modify the workability and plasticity of the concrete.