Mixing method and dosage of PP fibrillated fiber
Writer： admin Time：2023-11-01 16:24 Browse：
After the polypropylene fibrillated fiber is put into the concrete, the transverse connection between the fiber monofilaments can be destroyed by the rubbing and friction of the concrete itself, forming the fiber monofilament or network structure fully opening.
Construction method of polypropylene mesh fiber: after the polypropylene mesh fiber is put into the concrete, in the process of concrete mixing, the transverse connection between the fiber monofilaments can be destroyed by the rubbing and friction of the concrete itself, forming the fiber monofilament or mesh structure fully opening, so as to realize the effect of a large number of polypropylene fiber monofilaments to prevent cracking.
Length selection: 19mm for ordinary concrete and 10mm for shotcrete. In general, the mixing amount is 0.9kg/m3, that of deck waterproof layer is 0.9-1.8kg/m3, and that of Shotcrete for tunnel is 0.9-1.8kg/m3.
Mixing process: first put gravel, then fiber, and then put sand to stir for 2 minutes, so that the fiber is fully opened, and then put in cement and water, and mix evenly according to the conventional process.
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