KraTos Micro Synthetic Fiber Reinforcement is being produced from the raw material Polyamide 6.6 according to the EN 14889-2 Class I standard and provides superior results in terms of preventing early age plastic and long-term drying shrinkage cracks when compared to polypropylene and basalt fibers.
In contrast to other synthetic fibers, KraTos Micro is capable of absorbing up to 5% of the moisture. Moisture that is retained by the fibers when the concrete is freshly poured is reintroduced to the concrete as it sets, resulting in an internal curing effect. This minimizes the formation of cracks due to heat and shrinkage and improves structural integrity.
Areas of Use
Apart from its application in ready-mixed concrete and shotcrete, KraTos Micro can be used in all cementbased composite materials, including semi-dry floor screed applications, interior and exterior plaster applications, construction chemicals manufacturing, repair mortars and similar technical mortar applications.
As a result of accredited tests conducted at Aachen University in Germany, it has been proved that the use of 600 g/m3 dosage prevents 99% of the shrinkage cracks.
KraTos Micro Synthetic Fiber Reinforcement may be dispensed as water-soluble bags that can be dosed or supplied in big-bags, which are scaled according to project requirements.
||EN 14889-2 Class I
|Specific Gravity (gr/cm3)
|Tensile Stress (MPa)
|Resistance to Corrosion
|Melting Temperature [oC]
|Number of Fibers / Kg
||222 Million (6 mm)
111 Million (12 mm)
Download Technical Brochure
Aachen University Accredited Performance Report