Writer： admin Time：2025-03-28 09:16 Browse：
Effect of polypropylene fiber on fire resistance of concrete
Polypropylene fiber is a common concrete reinforcement material, which can be applied to various concretes as toughening and crack-resistant fiber. The softening point of polypropylene fiber is 130 degrees, and the melting point is 158-173 degrees. When polypropylene reinforced concrete fiber encounters fire and high temperature, the fiber will soften and melt a lot, forming a multi-porous exhaust channel inside the concrete, which can not only reduce the tension inside the concrete, but also delay the spread of the fire. While strengthening concrete, polypropylene fiber also plays a role in protecting concrete and enhances the concrete's anti-stripping ability.
Specific effects of polypropylene fiber on the fire resistance of concrete
1.Slow down the spread of flames: Polypropylene fiber can slow down the spread of flames in the case of fire, thereby providing more time for personnel evacuation and fire extinguishing.
2.Disperse stress and enhance toughness: Fibers can disperse stress and enhance the toughness of concrete, making it less likely to crack or collapse when exposed to high temperatures.
3.Maintain structural stability: By enhancing the intrinsic quality of concrete, polypropylene fiber can maintain the stability of the structure, delay its aging process, and maintain long-term performance.
Application scenarios of polypropylene fiber concrete
Polypropylene fiber concrete is widely used in various projects that require high fire resistance, including:
Basement floor, side wall, top plate, roof cast-in-place floor, reservoir and other concrete rigid self-waterproof structures
Water conservancy projects, subways, airport runways, port terminals, overpass viaduct decks, bridge piers, super-long structures and other projects with high requirements for crack resistance, impact resistance and wear resistance
Interior (exterior) wall painting of cement mortar, aerated concrete plastering, interior decoration putty and thermal insulation mortar
Civil air defense military projects, oil platforms, chimneys, refractory materials and other explosion-proof and fire-resistant projects
Tunnel, culvert lining, thin-walled structure, slope reinforcement and other shotcrete projects
Polypropylene fiber is a concrete reinforcing material. Due to its low melting point, it is also one of the common explosion-proof fibers for refractory materials and refractory castables. FedFiber is a manufacturer specializing in the production of polypropylene fibers with multiple specifications to meet the needs of different customers.
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