1 . Introduction
- Fiber PP ( Polypropylene) is a organic fiber , low- density , mixed quickly and easily in concrete block , reinforced most effective way in order to protect the small crack -resistant concrete .
- PP fibers do not rust or decay while reinforcing properties of concrete as good as fiberglass .
2 . Advantages of PP fibers in concrete
- Avoid small cracks in concrete .
- Surfaces sealed concrete products , flat and smooth ( no pore ) .
- Less is more corrosive . - Concrete Products more stable , more durable .
- Application of PP fibers is particularly effective when the weather changed .
3 . Note
- PP fibers are mixed in after the concrete mixing process and must be used immediately .
- PP fiber length 1.5 times the minimum diameter of the sand particles .
- Time fibers in concrete mix shortest as possible to avoid damage to the fiber.
- The percentage of fiber depending on the requirements , can be from 1-5 kg per 1 m3 of concrete .
- PP fibers in concrete as much as high crack resistance .
- PP yarn not replace iron .