RCM UltraFibers are a comprehensive line of high-performance loose fibers designed to enhance concrete performance across a broad range of structural and non-structural applications. Engineered from advanced materials, UltraFibers provide superior crack control, improved durability, and increased long-term resilience in both conventional and specialty concrete mixes.

Whether used in industrial slabs, precast elements, marine structures, or high-temperature environments, UltraFibers deliver consistent performance and seamless integration into standard concrete production.

UltraFibers AR Glass (Alkali-Resistant Glass Fibers)

Formulated with high-zirconia content for exceptional alkali resistance, UltraFibers AR Glass are designed specifically for durability in concrete environments.

• Function: Crack control, shrinkage mitigation, and durability enhancement.
• Benefits: Outstanding resistance to alkali attack; ideal for long-term applications.
• Applications: GRC (Glassfibre Reinforced Concrete), precast panels, architectural cladding, overlays, and UHPC formulations.

UltraFibers Basalt (Chopped Basalt Fibers)

Derived from volcanic rock and naturally resistant to high temperatures and chemicals, UltraFibers Basalt offer exceptional strength and environmental durability.

• Function: Micro-crack suppression and thermal stability.
• Benefits: High tensile strength, alkali resistance, and sustainable material source.
• Applications: Fire-resistant concrete, marine and coastal works, thermal protection layers, and eco-conscious projects.

UltraFibers PP (Polypropylene Fiber Line)

Available in micro, macro, and fibrillated forms, UltraFibers PP are versatile, non-corrosive fibers ideal for both early-age shrinkage control and structural performance.

• Function: Plastic shrinkage crack reduction, improved toughness, and post-crack strength.
• Benefits: Lightweight, corrosion-free, and compatible with all mix types.
• Applications: Slabs-on-grade, tunnel shotcrete, pavements, precast elements, and foundations.