Karanwal Infratech Materials Pvt. Ltd.

Cracks play an important role as they change concrete structures into permeable elements and consequently with a high risk of corrosion. Cracks not only reduce the quality of concrete and make it aesthetically unacceptable but also make structures out of service. If these cracks do not exceed a certain width, they are neither harmful to a structure nor to its serviceability. Therefore, it is important to reduce the crack width and this can be achieved by adding polypropylene fibres to concrete.

Thus addition of fibres in cement concrete matrix bridges these cracks and restrains them from further opening. In order to achieve more deflection in the beam, additional forces and energies are required to pull out or fracture the fibres. This process, apart from preserving the integrity of concrete, improves the load-carrying capacity of structural member beyond cracking. Reinforcing steel bars in concrete have the same beneficial effect because they act as long continuous fibres. Short discontinuous fibres have the advantage, however, of being uniformly mixed and dispersed throughout the concrete.

The major reasons for crack formation are Plastic shrinkage, Plastic settlement, Freeze thaw damage, Fire damage etc.

Types of PP Fibres Supplied by us:

1.Macrosynthetic Polypropylene Fibres (Structural Fibre): This kind of fiber is superior to conventional reinforcement in shotcrete that can outperform, assure cost saving, and is easy to use.


2.Fibrillated Polypropylene Fibres (Non Structural Fibre) or Micro PP Fibre: The products appear net-like structure with many fiber monofilaments connected. When the fiber is put into the concrete, the horizontal structure in fiber monofilament can be destroyed in the course of stirring owing to friction and rubbing, and the fiber monofilament or net-like structure will fully stretch, thus the concrete is reinforced by a great number of polypropylene fibers.


3.Monofilament Polypropylene Fibres (Non Structural Fibres): It is used to inhibit the formation of small cracks which can occur through plastic shrinkage, premature drying and early thermal changes in order to provide utilizations of the intrinsic properties of hardened cementitious materials. Monofilament fibers do not affect the chemical hydration of the cement and are compatible with all concrete mixes and admixtures. It creates an internal support system which results in more uniform bleeding thereby discouraging segregation and settlement of the concrete ingredients.