What is the appropriate dosage of polypropylene fiber in concrete?

The effectiveness of polypropylene fibers in concrete largely depends on the quantity and uniform distribution of fiber filaments in the concrete. Due to the specialized membrane layer covering the surface of the fibers, millions of single filament fibers can be evenly distributed in concrete. Therefore, in general, the amount of fiber added to concrete does not need to be too high. Adding 0.6-1.2kg to 1m3 is sufficient. If the fiber content is set to 1m3 of concrete and 0.9kg is added, the number of single fiber fibers (length specification 12mm) in 1m3 of concrete can reach nearly 200 million.