AR Glass Fibers
$17.50 - $7,645.00
PVA Fibers for Concrete, GFRC & UHPC
Advanced Reinforcement for High Performance Concrete Applications
Fishstone PVA (Polyvinyl Alcohol) Fibers are an ultra high-performance reinforcement fiber engineered specifically for advanced cementitious systems including concrete countertops, GFRC, UHPC, ECC, architectural panels, and specialty concrete products.
What makes PVA fibers unique is their ability to create a fully engaged molecular bond with mortar and concrete that can be up to 300% greater than many conventional synthetic fibers. This exceptional bond strength allows the fibers to actively engage within the cement matrix, helping control crack propagation while improving toughness, durability, and long-term performance.
Unlike standard fibers that primarily reduce early shrinkage cracking, PVA fibers become an integral part of the concrete structure itself, helping transform brittle concrete into a tougher and more resilient composite material.
Key Benefits of PVA Fibers
- Superior crack resistance and crack bridging
- Helps control plastic shrinkage cracking
- Reduces thermal cracking
- Improves abrasion resistance
- Increased flexural and tensile performance
- Excellent bond with cementitious materials
- Enhanced durability in thin concrete sections
- Ideal for ECC, UHPC, and high-performance mix designs
- Alkali resistant and non-corrosive
- Excellent dispersion characteristics
PVA fibers are especially effective in thin concrete applications where traditional reinforcement may not be practical or where maximum toughness and crack resistance are desired.
Ideal Applications
Fishstone PVA Fibers are commonly used in:
- Concrete countertops
- GFRC concrete
- UHPC and RPC systems
- Engineered Cementitious Composites (ECC)
- Thin concrete wall panels
- Concrete furniture
- Architectural precast
- Decorative concrete
- Specialty repair mortars
- High-performance concrete products
These fibers are an excellent choice for fabricators and mix designers looking to push the performance limits of modern concrete technology.
High Performance Concrete Technology
PVA fibers are widely recognized in advanced concrete technology because of their exceptional interaction with the cement matrix. Their strong molecular bond allows the fibers to help distribute stresses throughout the concrete while controlling microcracking before larger visible cracks develop.
This makes them particularly valuable in ECC-style mixes designed for improved ductility and crack resistance.
When combined with high-performance admixtures, pozzolans, polymers, and optimized aggregate gradations, PVA fibers can significantly improve the toughness and overall performance of modern cementitious systems.
ASTM Compliance
Fishstone PVA Fibers meet the requirements of:
- ASTM C-1116, Section 4.1.3
- AC-32 at 1.0 lb (.45 kg) per cubic yard
Mixing Instructions
Add fibers directly into the mixing system during or after batching the ingredients. Mix at high speed for a minimum of five minutes to ensure complete dispersion throughout the batch.
Additional mixing does not adversely affect fiber distribution or overall fiber performance.
For improved workability and finishing characteristics, the use of a water reducer or high-range superplasticizer such as Fishstone P-120 or Super-SIX-Admix™ is recommended.
Storage & Shelf Life
Store in a dry location and protect product from rain and moisture exposure.
Why Buy PVA Fibers from Fishstone?
At Fishstone Concrete Countertop Supply, we specialize in materials for decorative and high-performance concrete applications. Our PVA fibers are trusted by professional fabricators, artisans, and concrete innovators seeking stronger, tougher, and more crack-resistant concrete systems.
Whether you are developing ECC mixes, casting ultra-thin panels, or improving the durability of decorative concrete, Fishstone PVA Fibers deliver professional-grade reinforcement for advanced concrete technology.
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Reviews
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PVA fiber troweled table top
In a recent troweled a concrete tabletop, I evaluated the performance of PVA fiber within my mix design, and the results were impressive. I used PVA Fiber 15 at a 0.25% loading rate and PVA 100 at 0.7% (by dry weight). Both grades blended seamlessly into the mix, showing excellent stealth characteristics. Virtually invisible in the finished surface while still providing noticeable internal reinforcement. During placement and troweling, the fibers remained well-dispersed with no visible fiber fuzz or surface disruption, maintaining a clean, professional finish. The addition of PVA fiber enhanced crack resistance, surface cohesion, and structural integrity of the slab without sacrificing workability. When combined with C64, the mix showed perfect wet-out, improved cream migration, and significantly reduced air entrapment, leading to a smoother, denser surface. Overall, PVA fiber performed exceptionally well, delivering both functional reinforcement and aesthetic quality — a true “stealth fiber” solution for high-performance decorative and structural concrete applications.