Polyvinyl Alcohol Fiber(PVAF)

Polyvinyl alcohol fiber (PVAF) is an ideal environment-friendly cement reinforcement material successfully developed by our company recently. Because of its unique molecular structure, it has a good affinity with cement and suitable alkali and weather resistance. Effectively prevent and inhibit the formation and development of cracks, improve concrete’s bending, impact, and cracking strength, and improve concrete’s impermeability, impact resistance, and earthquake resistance. It can be widely used in walls, roofs, floors and roads, bridges, tunnels, and slope reinforcement of industrial and civil buildings. Currently, in cement concrete engineering, due to the unique properties of PVA fiber, it has broad development prospects in engineering and construction applications, and it is an ideal new product that can completely replace asbestos.

Performance

1. High strength and low elongation: superior mechanical properties.
2. Acidity and alkalinity: The strength loss is low in a long-term acid-base environment.
3. Corrosion resistance: The fiber is buried underground for a long time without mold, decay, or insects.
4. Dispersion: The fiber does not stick together, has good water dispersibility, and has a good affinity with cement.

Function

1.Anti-crack and anti-seepage: The fibers are randomly distributed in the concrete (mortar), which can effectively prevent the occurrence and development of cracks and improve the ability of waterproof and anti-seepage.

Usage of PVA fiber and PA (nylon) fiber

2.Shock and earthquake resistance: Effectively absorb impact energy and improve earthquake resistance.

Cement board reinforcement test performance comparison table

3.Improve the frost resistance and fatigue resistance of concrete.

4.Increase toughness: improve the brittleness of concrete,impact and bending resistance.

 Application scope

1. Large-volume concrete pouring and guardrails, damsand parking lots.
2. Make concrete components, platesand light wall panels to replace asbestos and make asbestos cement products.
3. Shotcrete for tunnels, minesand culverts.
4. Make light wall panels, GRC boards, insulation boards, and other building materials.

Usage

1. The original proportion of concrete remains unchanged, and the fibers are accurately weighed according to the designed addition amount and the amount of concrete mixed each time.
2. After the gravel material is ready, add the fiber, the aggregate, and water to the mixer, then stir.
3. After the mixing is completed, take random samples. The concrete can be used if the fibers have been evenly dispersed into monofilaments. If there are still bundles of fibers, prolong the mixing time for 30-60 seconds, and then it can be used.
4. Fiber-added concrete’s construction and maintenance process is identical to ordinary concrete’s.
5. Product dosage: Generally speaking, for plain slurry or mortar, fiber-reinforced cement slabs, and corrugated tiles, the dosage range is 0.6-1kg/m³, and the standard dosage is 0.6kg/m³; for concrete, the dosage range is 0.6-1.9 kg/m³, the usual amount is 0.9kg/m³.