Kratos Structural Macro Synthetic Fiber Reinforcements are manufactured according to EN 14889-2 Class 2 and ASTM C 1116 standards from high-performance Polypropylene raw material. Kratos Macro provides the most effective solution against surface shrinkage and structural cracks that occur under the biggest weakness of concrete in all applications. Its three-dimensional homogeneous fiber distribution design within concrete enhances the carrying capacity of concrete under service and design loads, ensuring effective crack control at every point.

In addition to its high-strength properties, it is used in various applications in the construction sector, from industrial field concretes to topping concretes, high-performance railway substructure concretes to runway and port concretes, shotcrete concretes to tunnel linings, and precast structural elements, thanks to its advantages of easy mixing and quick application.

Additional information

Fiber Class

EN 14889-2 Class II

Raw Material

Virgin Polypropylene


0,91 gr/cm³


54 mm

Filament Diameter

0.95 mm

Tensile Strength

530 MPa

Elastic Modulus

7,2 GPa

Melting Point

160 °C

Acid and Alkali Resistance


Resistance to Corrosion


Number of Fibers

28.000 / Kg