Why is Polypropylene Fiber Used In Concrete?

Why is Polypropylene Fiber Used In Concrete?

Concrete is a strong material in compression but weak in tension, which is why it often cracks. To combat this, reinforcement like steel bars is used. But add polypropylene fibers are maybe another method. That polypropylene fibers in concrete can help control shrinkage cracks as the concrete cures. Shrinkage happens when concrete dries and loses moisture, leading to small cracks. The fibers might hold the concrete together, reducing these cracks.

Also, polypropylene fibers improve durability. If the concrete is less prone to cracking, it might last longer because water and chemicals can't penetrate as easily. That would prevent corrosion of any steel reinforcement inside.

Polypropylene fiber is a plastic synthetic fiber, so it's not biodegradable. But the amount used is small enough that the benefits outweigh the environmental concerns. Also, using fibers to extend the lifespan of concrete structures could be more sustainable in the long run.

Applications of polypropylene fibers are used: maybe in precast concrete, pavements, overlays, shotcrete, and structures where thin sections are needed. They might also be used in residential projects where minor crack prevention is sufficient without needing heavy steel reinforcement.