Polypropylene Fibers

Description

Polypropylene Fibers

Polypropylene fibers are widely used to strengthen and arm concrete, cement and gypsum mixture. The use of this type of fibers will increase the flexural, tensile, shear and abrasion strength of concrete.

Polypropylene fibers (PP) increase the weight and cause settling in concrete when mixed, and they may reduce the alkaline nature of the concrete environment. These fibers are produced in lengths of 6, 12, and 18 millimeters for concrete applications, and 6 millimeters for thin or gypsum mortars. They are widely used in the construction of thin concrete walls, where conventional reinforcing bars are not feasible, with polypropylene fibers acting as the reinforcing element.

Polypropylene fibers alone have low resistance to fire, sunlight, and oxygen; however, when embedded in concrete or mortar, a protective coating is formed that minimizes their sensitivity to fire and environmental factors. Additionally, adding these polymer fibers to concrete reduces plastic and hardened concrete cracks.

These fibers, also known as PP fibers, are synthetic fibers made from polypropylene polymer and are highly resistant to abrasion, crushing, acids, alkalis, moisture, fungi, and insects. Due to their strength, durability, and cost-effectiveness, polypropylene fibers find extensive applications in various fields; however, they slowly degrade when exposed to sunlight.

Features

• Reduces plastic shrinkage cracks and hardened concrete cracks
• Minimizes cracking caused by changes in moisture and temperature
• Enhances resistance to alkaline conditions
• Increases the modulus of elasticity and has a relatively high melting point
• Improves the mechanical properties of concrete
• Serves as a suitable alternative to thermal reinforcement bars
• Strengthens cohesion and adhesion in concrete
• Prevents cracking due to concrete shrinkage
• Increases energy absorption capacity in flexure and tension
• Enhances impact resistance of concrete
• Improves concrete workability and flexibility
• Increases durability and lifespan of concrete
• Provides good resistance to moisture
• Lightweight and easy to transport
• Offers thermal and electrical insulation properties
• Fully cost-effective and economical

Applications

• Suitable for producing flexible concrete
• Ideal for creating concrete with high impact and abrasion resistance
• Usable in the production of fire-resistant concrete
• Enables reinforced concrete without the need for rebar
• Suitable for thin, reinforced concrete without reinforcement bars
• Applicable for use in shotcrete mortar
• Suitable for ready-mix concrete and precast elements
• Ideal for manufacturing cement sheets

Polypropylene Fiber Usage Method

Polypropylene fibers can be added to concrete at any stage.

Usually, PP fibers are mixed with aggregates first, and then water is added.

Alternatively, PP fibers can be mixed with the required mixing water and then added to the dry mortar. To achieve a uniform and homogeneous mixture, continue mixing for 3 to 4 minutes.

Gradually add PP fibers into the mixer and continue high-speed mixing until the fibers are fully dispersed in the concrete.

Note: Polypropylene fibers typically reduce the concrete slump. Especially with high fiber volume or longer fiber lengths, the workability of the concrete may decrease. Therefore, it is recommended to use a concrete superplasticizer alongside the fibers to enhance mix fluidity and improve workability.

Technical specification table

state of	Interwoven threads and mesh threads
Color	white
Special Weight	gr/cm 0/91
Melting range	165 degrees Celsius
Percentage increase in length	80 %
Immersion in water	3 to 5 seconds
Percentage increase in length	2 times
Tensile strength	400 MPa

 

Package

20kg bag