Wiking® Fibrillated Concrete Fibres – Crack Control, Strength & Durability
Wiking® Fibrillated Fibres are multifilament polypropylene fibres, applicable to all types of concrete products – especially mortar, shotcrete and concrete elements. The fibres prevent the formation of cracks and provide a high level of tensile strength.
Fibrillated Standard Series
Wiking® Standard Fine
2–36 mm, 361 MPa
Wiking® Standard Extra
12–36 mm, 361 MPa
Wiking® Standard Coarse
12–36 mm, 786 MPa
Fibrillated Special Series
Wiking® 3000 m
12–36 mm, 299 MPa
Wiking® 8000 m SP
48 mm, 618 MPa
Wiking® WEFF+ P
2-4 mm, 655 MPa
Key Benefits Across the Range
Prevents plastic
shrinkage and
settlement cracks
Increases tensile,
flexural and
impact strength
Improves ductility
and joint spacing
Reduces moisture
uptake and
shrinkage
Non-magnetic
and chemically
resistant
Low air content
(1–3%) due
to surface treatment
Flame-retardant
properties
Product Comparison Table
Standard Fine
- Length (mm)
- 2–36
- Tensile Strength (MPa)
- 361
- Flame-retardant
- Yes ●●●●●
- Application
- Coast protection, Dry mortars, Elements, Ground decks, Indoor floors, Pavements and roads, Windmill pedestals and similar
- Data sheet
Download
Standard Extra
- Length (mm)
- 12–36
- Tensile Strength (MPa)
- 361
- Flame-retardant
- Yes ●●●●●
- Application
- Indoor floors, Agricultural construction, Concrete products, Operational areas, Parking decks, Screed
- Data sheet
- Download
Standard Coarse
- Length (mm)
- 12–36
- Tensile Strength (MPa)
- 786
- Flame-retardant
- Yes ●●●●●
- Application
- Hall floors, Agricultural construction, Concrete products, Operational areas, Parking decks, Screed
- Data sheet
- Download
3000 m
- Length (mm)
- 12–36
- Tensile Strength (MPa)
- 299
- Flame-retardant
- Yes ●●●○○
- Application
- Hall floors, Agricultural construction, Concrete products, Operational areas, Parking decks, Screed
- Data sheet
- Download
8000 m SP
- Length (mm)
- 48
- Tensile Strength (MPa)
- 618
- Flame-retardant
- Yes ●●●○○
- Application
- Hall floors, Agricultural construction, Concrete products, Operational areas, Parking decks, Screed
- Data sheet
- Download
WEFF+ P
- Length (mm)
- 2–4
- Tensile Strength (MPa)
- 655
- Flame-retardant
- Yes ●●●●●
- Application
- Dry mortar, Indoor flooring, Precast elements, Roofing sheets, Facade panels
- Data sheet
- Download
Typical Applications
- Concrete elements (e.g. pavements, windmill pedestals, coastal structures)
- Indoor floors and outdoor decks
- Agricultural and industrial buildings
- Shotcrete, mortar, dry mix and render
- Parking structures, tunnels, production areas
Product description
Wiking® Fibrillated Fibres are made of virgin polypropylene, which has been extruded into very fine and slender fibrils. The fibrils offer outstanding mechanical bond strength in concrete due to their irregular and square shape.
Prevention of crack formation
When Wiking® Fibrillated Fibres are added to the concrete mix, the fibres will form a three-dimensional matrix in the mix to prevent the formation of plastic shrinkage and settlement cracks. This ensures a strong and more durable concrete structure.
Low density for increased adhesive strength
Polypropylene fibres have a very low density of 0.91g/cm3. Wiking® Fibrillated Special is modified with the application of an inorganic material to increase the fibre density to 1.01g/cm3. Wiking® Fibrillated Special is therefore ideal for increasing the adhesive strength of concrete.
Resistance to explosive fragmentation
Wiking® Fibriliated Fibres are also suited as fire-retardant material in tunnel construction projects. In case of fire, the fibres will melt and create small capillary cavities in the concrete, which will delay the explosive fragmentation, increasing the amount of time available to rescue people trapped in the tunnel fire.
Resistance to acids and bases
Polypropylene fibres are physically resistant to acids and bases (unlike all other synthetic fibres). Hence, the fibres will prevent the concrete from deteriorating – both in terms of look and durability.
Less than 1% air content
The surface of Wiking® Micro Fibres has received a special coating to increase the dispersing and adhesive abilities of the fibres. The special coating also ensures that the air content of fibre reinforced concrete stays below 1%.
Flexible production to your need
We produce fibrillated fibres in over 50 variations. Finer variations are especially suitable for dry-mix concrete, whereas coarser variations are especially suitable for maximising the bonding strength within the concrete.
Product description WEFF+ P
Wiking® WEFF+ P is a highly fibrillated multifilament fibre made of polypropylene (PP)
The fibre’s multi-branched structure ensures excellent dispersibility, high surface area, and superior bonding capacity in cementitious materials, while also supporting wet-laid processes and pulp-based applications.
Prevention of early shrinkage cracks
When Wiking® WEFF+ P is added to concrete, its high dispersion capacity and multi-branched structure create a dense fibre network that prevents early shrinkage cracks. This ensures uniform stress distribution and long-term durability.
Optimised for cement and fibre cement
The fibre improves strength, structure, and processing characteristics in cement-based products such as dry mortar, precast elements, roofing sheets, and façade panels.
Secondary applications in paper and pulp
Wiking® WEFF+ P is also suitable for heat-sealable paper, filtration media, coatings, and adhesives, making it a versatile solution for wet-laid processes and pulp-based products.
High surface area for superior bonding
Its unique design provides excellent fibre-to-fibre adhesion and enhanced bonding capacity in cementitious materials, ensuring maximum tensile strength transfer.
Resistance and durability
Made from polypropylene with additives, Wiking® WEFF+ P is resistant to acids and bases and maintains appearance and performance in harsh environments.
Frequently Asked Questions
Are all Wiking® fibres flame-retardant?
– Yes, but the flame resistance is defined by the fibre structure. Please contact us for further information.
What’s the difference between Fibrillated and Standard fibres?
Which fibre should I use for dry mortar or tunnel construction?
Use Wiking® Standard Fine for dry mortar and tunnel applications due to its fine structure and flame-retardant properties.
Can Wiking® fibres replace steel mesh reinforcement?
Yes – several variants are designed as alternatives to crack-controlling reinforcement mesh, offering improved dispersion and durability.
Are Wiking® fibres compatible with all concrete types?
Yes – they are suitable for mortar, shotcrete, dry mix and structural concrete, with over 50 variations available for tailored performance.
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Data Sheets
Download data sheets in PDF to get more information about each type of our Wiking® Fibrillated Fibres
