Second life steel fibers for more sustainable concrete structures

Dramix® Loop™ addresses one of the construction industry’s greatest challenges: drastically reducing CO₂ emissions without compromising performance. It does so by transforming high-grade tire cord from end-of-life tires into high-performance steel fibers for concrete reinforcement.

From the world’s leading steel tire cord manufacturer comes a new chapter — redefining concrete reinforcement through circularity. By prioritizing a circular use for this premium steel, Bekaert developed the first certified second-life steel fiber, engineered specifically for concrete reinforcement and designed to support a truly circular economy. Delivering sustainability you can measure and performance you can trust.

What truly sets Dramix® Loop™ apart is its combination of 100% circularity, near-zero carbon emissions, and consistent mechanical performance. With a high tensile strength of 390 ksi average and an ultra-dense fiber network, enabled by its thin average diameter of 0.01 in, Dramix® Loop™ allows lower dosages while delivering effective crack control and load transfer. All this with exceptional environmental value, without additional investment.

Maximizing performance, minimizing environmental impact

Near-zero carbon emissions

Dramix® Loop™ is made from second life steel, significantly reducing its environmental impact, as it has an EPD value of 0,0436 kg CO2e/kg.

Ultra dense fiber network

Thanks to the fibers’ high aspect ratio, up to 160,000 fibers/kg (avg.) can be achieved within the concrete matrix, enhancing crack control and post-cracking ductility while ensuring high stress resistance without fiber breakage.

Driving a circular economy

Made from the tire cord of end of-life tires, Dramix® Loop™ repurposes steel to support a sustainable, closed-loop economy.

Maximized benefits of steel fiber reinforcement

Dramix® Loop™ delivers the same benefits as steel fiber reinforcement - cost efficiency, enhanced durability and improved safety, while offering exceptional environmental value without additional investment.

Our Dramix® Loop™ portfolio includes three variants, each engineered to balance workability, dosage, and reinforcement precision — giving you the flexibility to match your mix, project, and performance needs.

Built for a circular future

Being designed to support a truly circular economy, Dramix® Loop™ steel fibers deliver performance without compromise:

Up to 80% CO₂ reduction when combined with Dramix® 4D compared to rebar solutions.
Supports LEED, BREEAM, and EU Taxonomy compliance for sustainable projects.
Contributes to Scope 3 emission reductions, helping owners and developers meet ESG goals.
100% circular: steel that’s reborn, ready to reinforce again.

Adapts to your project

Every project is different. That’s why Dramix® Loop™ offers application flexibility through a tailored range of fiber lengths and tolerances:

Adapt fiber dosing based on application demands.
Blend with Dramix® steel fibers for a hybrid solution.
Backed by our testing and technical support.

Helps you build smarter

Need help choosing the right fiber or adjusting your mix? Our experts offer full support — from specification to on-site implementation — so you can build better with confidence.

Engineered to perform – Confidently

Dramix® Loop™ steel fibers are designed to turn circularity into real, consistent mechanical performance across projects and applications:

High tensile strength of 390 ksi average across all variants
Ultra-dense fiber network, enhancing crack control and load transfer while providing uniform fiber distribution in concrete
ASTM aligned / CE marked with European Technical Assessment (ETA)

This is second-life steel with a clear purpose: reinforcing concrete structures with confidence, durability, and measurable impact.

Applications

Industrial floors.
Outdoor pavements.
Residential applications.
Sprayed concrete.
Infrastructure applications.
Precast elements.
(Ultra) High Performance Concrete (UHPC/HPC).

Benefits

100% circular.
Near-zero carbon emissions.
High strength.
Versatile and precision-engineered.
Compatible with Dramix® solutions.

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Features

Average tensile strength 390 Ksi

Average diameter 0.01 in

Average fiber lengths 0.59 - 0.79 - 0.98 in

Aspect ratios (L/d) 55 - 75 - 93

Fiber network Up to 72,000 fibers / lb

Bring Dramix® Loop™ to your next project

Work with our expert team to implement this innovative solution with a tailored plan from start to finish.

Contact our experts

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