First, the characteristics and application of polypropylene fiber

Polypropylene fiber raw material is 100% pure polypropylene, to be special additives, pH and salt on both the resilience of polypropylene fiber in the manufacturing process, through a special anti-static and UV treatment, the fibers in the concrete mortar Pellet and not uniform, and has anti-UV aging characteristics, to ensure that the concrete, insulation mortar be effective in the long term.

Chemical properties of polypropylene fiber is unusually stable, does not absorb the chemical reaction with other substances. Polypropylene fiber to change the concrete, the main physical properties of mortar, the cement-based materials and other additives thickness with good compatibility.

When the cement-based compound mixed with polypropylene fibers, will increase the crack resistance of more than 1.2 times. The ratio is reasonable, under the construction specifications can completely prevent the appearance of cracks. Mixed concrete or mortar, can be very effective in controlling plastic shrinkage of concrete or mortar, cracked or because of changes in temperature caused the cracks to prevent and suppress the development of cracks, thus improving the impermeability of concrete, crack resistance.

Adding polypropylene fibers, can also greatly improve the cracking of concrete or mortar and impact resistance, abrasion resistance, anti-freeze-thaw, settlement and reduction of plastic cracking.

Second, the polypropylene fiber for use, specifications and uses

1) 2 --- 3mm long fiber

2-3mm long fiber can be used for dry-mixed mortar, putty, plaster, to play the role of a good crack.

2) 6 --- 12mm long fiber

6-12mm long fibers, generally used for wiping surfaces, the surface layer, leveling layer, insulation backing of concrete or mortar.

3) 19mm long fiber

19mm long fiber, is generally used for a variety of concrete, the mixing, transport, pouring, curing and other processes with the same non-doped fiber concrete.

Third, the amount of polypropylene fiber

1) cracking putty

By 2-3mm long fiber per ton of cracking putty, add the amount of polypropylene fiber 0.5-1.0kg. According to actual requirements may be appropriate to use a longer length or a little big fiber content.

2) the end of passers-by mortar (maximum aggregate particles in 1mm or less)

With 6-12mm long fibers, in principle, with 3g fiber per kilogram of cement. After the first dry mixing generally add water, when the cement content per cubic meter of mortar below the 400kg, the minimum amount of fiber per cubic with 1.2kg; When the cement content of 400kg or more, according to one kilogram of cement for each additional increase 3g fiber for greater fiber content.

3) general structural concrete, finished products and to panel:

By 19mm long fibers per cubic content of 350kg of concrete when the cement, the minimum amount of fiber per cubic meter with 0.9kg; when the cement content per cubic meter of concrete above the 350kg, one kilogram of cement in accordance with each additional increase 2g fiber for greater fiber content.

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