Polypropylen fiber in concrete_Synthetic macro fibers

Polypropylen fiber in concrete

The role of polypropylene fibers in concrete includes the following aspects:

1. Preventing the occurrence of shrinkage cracks during concrete shrinkage. When polypropylene fibers are not used, the concrete needs to be watered to moisturize and prevent cracking during drying and shrinkage. Rework is required, but adding polypropylene fibers can improve the toughness of the concrete to a certain extent and prevent cracking.

Polypropylene fiber in concrete

2. It can improve the fire resistance of concrete to a certain extent.

When concrete is exposed to high temperatures, the moisture inside will directly vaporize on the surface, causing a certain amount of water to be lost inside the concrete, resulting in low fire resistance. However, when polypropylene fiber material is added, it will cause many pores to form inside the concrete at high temperatures, and water will shuttle along the pores, greatly improving the fire resistance.

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Polypropylen fiber in concrete

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