Concrete fibers_polypropylene fibrillated fiber for concrete
Writer： admin Time：2023-11-01 16:13 Browse：
Polypropylene fibrillated fiber is made of polypropylene through special process. Its appearance is a mesh structure formed by the intersection of multiple fiber monofilaments.
Polypropylene fibrillated fiber reinforced concrete is a kind of fiber mesh reinforced concrete formed by adding polypropylene fibrillated fiber into ordinary concrete. When the polypropylene mesh fiber is put into the concrete, in the process of concrete mixing, the transverse connection of the fiber monofilament is damaged by the kneading and friction of the concrete itself, forming a monofilament or mesh structure, which is fully opened, so as to realize the effect of a large number of polypropylene mesh fiber to strengthen the concrete. It not only has the characteristics of ordinary concrete, but also has the ability to completely inhibit plastic shrinkage cracks, enhance impact resistance, improve toughness and ductility, resist corrosion and wear resistance and reduce permeability, especially early plastic shrinkage cracks., It can prevent and delay the corrosion of structural main reinforcement or steel plate. Compared with steel fiber concrete and carbon fiber concrete, polypropylene mesh fiber concrete has the advantages of large monofilament fineness, large quantity, simple construction and low cost. Based on the analysis of the experimental results of the mechanical properties of polypropylene mesh fiber concrete, this paper discusses the improvement of the mechanical properties of concrete after adding polypropylene mesh fiber in the aspects of flexural, compressive and splitting resistance.
With the rapid development of China's infrastructure, the amount of concrete in civil engineering is increasing. At the same time, the requirements for concrete materials in compression, tension, bending and crack resistance are higher and higher. Facts have proved that polypropylene fibrillated fiber is a good concrete additive
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