Polypropylene fiber is a kind of strong bundle monofilament fiber made of polypropylene as the main raw material and unique production process. Adding it into concrete mortar can effectively control the micro cracks caused by solid plastic shrinkage, dry shrinkage, temperature change and other factors of concrete mortar, prevent and inhibit the formation and development of cracks, and greatly improve the crack resistance and impermeability of concrete, It can be widely used in various mortar, underground waterproof engineering, wall, floor, cement, basement, road and bridge engineering.
Performance of polypropylene fiber in dry cement mortar or concrete
1. It is evenly dispersed in the mortar, forming a three-dimensional random structure inside, and can lock the moisture inside the mortar, with strong grip and wrapping force;
2. It is not easy to agglomerate in mortar or concrete, which can effectively ensure its crack prevention performance. It is convenient to use. There is no need to change the mortar ratio. Put the fiber into the mortar mixture and add water to mix evenly;
3. In the concrete, the wear resistance, impermeability, freeze-thaw resistance of the concrete are improved, and the reinforcement protection function is enhanced;
4. The fiber has stable chemical properties, strong acid and alkali resistance, and can be used in any engineering.
Physical property
★ fiber type: bundle monofilament
★ density: 0.91/g/cm3
★ equivalent diameter: 18 ~ 48
★ tensile strength: ≥ 500MPa
★ elastic modulus: ≥ 3850mpa
★ elongation at break: 10-28%
★ acid and alkaline resistance: extremely high
★ melting point: 160 ~ 180 ℃
★ ignition point: 580 ℃
★ length: 3, 6, 9, 12, 5, 54mm
Advantages of polypropylene fiber in cement mortar
▲ improve the impermeability of mortar
▲ improve the toughness, fatigue resistance and impact wear resistance of cement mortar
▲ improve crack resistance
▲ improve the durability of cement mortar
▲ improve the resistance of cement mortar to freeze-thaw damage
