Polyacrylonitrile fiber Application- widely used in bituminous pavement and bridge construction, cold-patch and cementation

Polyacrylonitrile fiber

Application- widely used in bituminous pavement and bridge construction, cold-patch and cementation of fissures of the road to protect the project from cracking.

Features- 

enhance the crack resistance of cement concrete effectively-

a)         the good cohesiveness with concrete makes it have bearing use for the architecture, and prevent the appearance of crack.

b)         Avoid desiccation fissure by adjusting moisture content.

c)         Reduce fissures by adjusting heat-release or other temperature change.

Improve anti-permeability and freezing resistance of concrete, increase its durability.

a)         The fiber can highly reduce the size and quantity of pore in the concrete, and improves the anti-permeability and freezing resistance of concrete. The frequency of freezing resistance of concrete is up to 600 times.

Lower the brittleness of concrete and prevent the crack from widening.Improve the stability of concrete under high temperature.Improve the tensile strength, shear strength and crack resistance under low temperature.Improve the antifatigue and durability of concrete.Improve the moisture stability and toughness of concrete.Improve the abrasive resistance and anti-strip feature of the concrete.

Physical parameter-

fineness(dtex)	1.9-3.8	Length(mm)	6,12,19
Diameter(um)	15-30
tinge	Brightness, light yellow, white	density(g/cm3)	1.18
modulus of elasticity	17100	Fiber quantity per kg (6mm)	800-900million
Extend rate (%)	14-20	strength of extension(MPa)	>900
acid resistance	great
alkali resistance	great
Ray resistance	Bets except fiber of flourine
thermal endurance	No melting under 240°C in short time
Solvents resistance	great

Polyacrylonitrile fiber