r twist

r-twist-mesh is a state-of-the-art structural synthetic macrofiber made from polyolefins. Its unique feature is its fibrillated, twisted-mesh geometry. This design is not a simple monofilament but a web-like structure that opens up and distributes during mixing, creating an exceptional three-dimensional mechanical anchorage in the concrete.

The twisted-mesh geometry is engineered to maximize anchorage. Unlike monofilament fibers that rely solely on surface friction (even with embossed patterns), r-twist-mesh "unravels" in the mix to form an interconnected network. This provides multiple anchor points, which translates into more efficient post-crack load transfer and, therefore, better performance in terms of residual strengths (fR1, fR3).

Yes, absolutely. r-twist-mesh is designed as a direct alternative to crack-control mesh and light structural reinforcement. An engineering design based on current codes (such as Eurocode or ACI) allows for the calculation of the required dosage to replace steel mesh, ensuring crack control and the necessary load-bearing capacity, with the added advantages of eliminating corrosion and simplifying logistics.

While steel has a higher modulus of elasticity, r-twist-mesh offers very competitive post-cracking performance thanks to its optimized design and high anchorage efficiency. For many industrial flooring and precast applications, the required residual strength values can be achieved with r-twist-mesh dosages. The final choice will depend on the project's specific requirements, with r-twist-mesh being the superior solution in corrosive environments or where lightweight and safe handling are priorities.

It is ideal for:

• Industrial floors and slabs-on-ground, especially where the goal is to eliminate steel mesh.
• Precast elements such as panels, vaults, or pipes.
• Shotcrete for slopes and tunnels, where its 3D network improves cohesion.
• Applications in aggressive environments (marine, industrial) where steel corrosion is a concern.

Excellent. The fiber bundles are easily added to the concrete and open up during mixing, ensuring a fast and homogeneous distribution without forming "hedgehogs" (clumps). Being polymeric and lightweight, it does not segregate, is easily pumpable, and does not protrude from the surface, allowing for a perfect finish with no risk of punctures or oxidation.

The dosage is determined by structural design but is typically in the range of 2 to 6 kg/m³ (approx. 3.4 to 10.1 lb/yd³). It is important to note that, due to its very low density compared to steel (approx. 910 kg/m³ vs 7850 kg/m³), a much larger number of individual fibers are added per kilogram, achieving a much denser and more efficient reinforcement distribution throughout the matrix.

Yes. The production of polymeric fibers has a significantly lower carbon footprint than that of steel. By allowing for the reduction or elimination of traditional steel and the optimization of concrete thicknesses, it contributes to creating more sustainable construction projects with a lower environmental impact.