Product Overview
GRO540 fibres are high-performance macro-synthetic fibres designed to meet the demanding requirements of modern concrete reinforcement technology. Engineered for strength, durability, and versatility, these fibres significantly enhance concrete performance by increasing resistance to cracking, improving load distribution, and boosting overall toughness.
Unlike traditional steel fibres and wire mesh, GRO540 synthetic fibres are lightweight, non-magnetic, and corrosion-resistant, offering long-lasting reinforcement solutions even in aggressive environments. Manufactured from a natural polypropylene homopolymer in an ISO 9001:2015 certified facility, GRO540 fibres are the only fibres produced in Africa that conform to EN 14889-2:2006 standards, carrying the CE mark for distribution across the EU.
Key Features & Benefits
- Controls and reduces plastic shrinkage and settlement cracking
- Provides impact, abrasion, and shatter resistance
- Enhances flexural toughness and residual strength
- Improves ductility and durability of concrete
- Reduces shotcrete rebound and improves finishing characteristics
- Replaces light-gauge welded wire reinforcement in many applications
- Increases resistance to fatigue, shock, and freeze/thaw cycles
- Improves fire resistance by minimizing explosive spalling
- Rust-free and pumpable, ensuring easy application
Applications
GRO540 fibres are suitable for a wide range of concrete and shotcrete projects, including:
- Slabs-on-ground, sidewalks, driveways, curbs, and parking areas
- Industrial floors and exterior pavements
- Precast concrete, thin-walled elements (e.g., septic tanks, vaults, walls)
- Overlays, patch repairs, and channel linings
- Ground support, slope stabilization, and seismic retrofits
- Coastal and marine structures
- Agricultural and water-retaining structures (tanks, irrigation channels)
- Airport runways, tunnels, and mining applications
Dosage
Dosage rates depend on the project’s reinforcement requirements and range from 2 kg/m³ to 9 kg/m³. Final mix designs should be determined by the engineering specifications of the project.
Mixing Instructions
- Use a plaster or concrete mechanical mixer.
- Mix fibres at maximum speed with dry cement for 5–10 minutes to ensure uniform dispersion.
- Once blended, proceed with normal mixing by adding water and aggregates.
Limitations
- Overdosing may reduce workability and increase cohesiveness.
- A slump loss of 50 mm to 125 mm may occur; this can be offset with plasticizers or superplasticizers.
- GRO540 fibres are not a substitute for structural steel reinforcement and should always be used with quality concrete mixes for best performance.
Packaging & Storage
- Supplied in 6 kg boxes, ready for direct use in batching plants or on-site mixing.
- Shelf life of up to 36 months when stored in a dry environment away from direct sunlight and moisture.
Conclusion
GRO540 macro-synthetic fibres represent the next generation of concrete reinforcement technology. With their superior performance, durability, and compliance with international standards, they are an ideal choice for engineers, contractors, and developers seeking reliable reinforcement solutions for demanding construction projects.