Danish Fibres > Asphalt Fibres

Wiking® AS-PE Asphalt Fibres – Road Reinforcement & Crack Prevention

Wiking® AS-PE Asphalt Fibres are a high-performance blend of aramid and polyolefin fibres, designed for asphalt mixes in binder and surface layers – including SMA and porous asphalt. These fibres prevent cracking, reduce rutting and significantly extend pavement life without changing installation methods.

Wiking® AS-PE Asphalt Fibres Series

18 mm, 3000 MPa, 1,45 g/cm³, Melting point 450°C

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Wiking AS-PE Asphalt

Watch: AS-PE Asphalt Fibres in 2 minutes

Key Benefits

Service life increased
by around 50%

Rut formation
reduced by > 50%

No need for any change in installation methods

Fewer cracks, and those that do occur are bridged

Thermal stability increased

100% recyclable

General Areas of Application

Asphalt pavements
Stone mastic asphalt (SMA)
Noise-reducing asphalt
Roads with heavy traffic loads
Roads optimized for durability

Product description

Three-dimensional reinforcement for asphalt durability

Wiking® AS-PE Asphalt Fibres combine aramid and polyolefin to create a robust three-dimensional structure within asphalt mixes. This reinforcement significantly improves tensile strength and prevents damage caused by thermal cracking, fatigue cracks and rut formation.

Prevents cracking and rut formation By distributing tensile forces evenly throughout the asphalt layer, AS-PE fibres reduce the risk of cracks and deformation. Independent tests show rut depth reduced by more than 50%, ensuring longer-lasting pavements.

Outstanding thermal stability and strength AS-PE fibres withstand extreme temperatures, from cryogenic conditions to high heat during asphalt production. With cracking temperatures as low as –26.3 °C and tensile strength up to 3000 MPa (aramid), they deliver exceptional performance under demanding conditions.

Easy integration into existing processes No changes to installation methods are required. AS-PE fibres are added directly to binder or surface layers, including Stone Mastic Asphalt (SMA) and porous asphalt, with a wet mixing time of at least 45 seconds.

Environmentally responsible and recyclable AS-PE fibres are 100% recyclable and help extend pavement life by up to 50%, reducing maintenance costs and environmental impact.

The difference in aborbtion of tensile forces on asphalt

Conventional asphalt

When pressure is exerted over a long period of time, it causes ruts. Tensile forces can be absorbed only to a limited extent, leading to cracks.

Asphalt with Wiking® AS-PE FIBRE

The three-dimensional system increases the restoring force of the asphalt surface and absorbs compressive and tensile forces. This results in a considerable reduction in rut formation and improved thermal stability and ensures that tensile forces from cryogenic and shear stress are dissipated without causing any damage.

Mixture test results from the IBQ Institute

Mixture type	AC 11 UHSF-FA	AC 11 DS
Binder type	25/55-55 A	25/55-55 A RC
Additives	Wiking® AS-PE Fibres	/
Density by volume [g/cm³]	2.372	2.384
Bulk density [g/cm³]	2.440	2.441
Air void content (calculated) [% by volume]	2.8	2.3
Rut depth [mm]	2.5	4.9
Strain rate [‰*10⁻⁴/n] (0.35 MPa)	0.8 / 0.0 / 1.0	12.3 / 13.1 / 7.7 (at inflection point)

Comparison Test from IBQ Institute

IBQ Institute has tested asphalt with Wiking® AS-PE Fibres against standard AC 11. The results show that the fibres create a more homogeneous pavement with improved resistance to rutting and cracking. This means higher tensile strength, lower bulk density, and asphalt that retains its shape for longer. The documentation confirms that a small investment in fibres can deliver significantly enhanced performance and durability.

Technical Specifications

Wiking® AS-PE FIBRE

An additive with a host of benefits

Wiking® AS-PE FIBRE is a synthetic fibre mixture of aramid and polyolefin fibres approximately 18 mm long, intended to be used as three-dimensional reinforcement in binder and/or surface

Wiking® AS-PE FIBRE bridges cracks and significantly reduces thermal cracking, as well as cracks caused by material fatigue. It also cuts rut formation dramatically due to the mixture’s higher resistance to permanent deformation.

These properties alone give asphalt modified with Wiking® AS-PE FIBRE a service life roughly 50% longer than that of conventional mixtures.

Wiking® AS-PE FIBRE do not melt when the mixture is hot and are renowned for their high tensile strength and durability at both high and low temperatures.

Key material characteristics

Material	Aramid (AS Fibres)	Polyolefin
Type	Monofilament fibres	Fibrillated fibres
Specific weight (g/cm³)	1.45	0.92
Tensile strength (MPa)	3000	35
Length (mm)	18	18
Color	Yellow	Yellow
Melting point (°C)	450	100-130
Carbon footprint (kgCO2-eq/kg)	8.7	2.98

Metering / wet mixing time

Wiking® AS-PE FIBRE fibres are metered at between 0.5 kg and 0.8 kg per metric ton of mixture. The wet mixing time (with liquid asphalt) should be at least 45 seconds.

Packaging unit
Bag	0.5 kg
Box	35 bags (17.5 kg)
Pallet	24 boxes (420 kg)

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Frequently Asked Questions

What is the environmental footprint of Wiking® AS-PE Asphalt Fibres?

We provide the CO₂ impact based on the material’s carbon footprint: Polyolefin fibres (Wiking® AS-PE): approx. 2.98 kg CO₂-eq/kg and Aramid fibres: approx. 8.70 kg CO₂-eq/kg

How do AS-PE fibres improve asphalt performance?

The fibres create a three-dimensional reinforcement within the asphalt, distributing tensile forces evenly. This prevents thermal cracking and rutting, extending pavement life by up to 50%.

Can AS-PE fibres withstand extreme temperatures?

Yes. They remain stable during asphalt production and resist cracking at temperatures as low as –26.3 °C, while maintaining strength under extreme heat as the polyoleofine strenghens the asphalt.

Do AS-PE fibres require changes to installation methods?

No. They integrate seamlessly into existing asphalt production processes with a wet mixing time of at least 45 seconds.

Can AS-PE fibres be combined with GeoGrid for better results?

Yes. Using AS-PE fibres in the asphalt layer together with GeoGrid in the base layer provides optimal reinforcement. GeoGrid improves load distribution and stabilises weak subgrades, while AS-PE fibres prevent cracking and rutting in the asphalt surface.

Meet our sales team

CEO/President

Palle Kuntz

+45 24 65 96 15

Sales Manager

David Etzerodt

+45 20 58 05 99

We also offer: Wiking® Super-B GeoGrid - Additional base layer strength

For projects requiring additional base layer strength, Wiking® Super-B GeoGrid is the ideal complement to Wiking® AS-PE Asphalt Fibres. Made from basalt, Wiking® Super-B GeoGrid improves load distribution and stabilises weak subgrades beneath asphalt, reducing deformation and enhancing structural integrity.

Basalt GeoGrid – Reinforcement for Weak Subgrades