Alkali-Resistant (AR) Glass Fiber for Concrete
Alkali-resistant (AR) glass fiber is a zirconia-containing glass fiber specifically engineered to withstand the highly alkaline environment of Portland cement concrete. It is used in glass fiber reinforced concrete (GFRC) for thin precast elements, facade panels, and decorative products, providing tensile reinforcement without the corrosion risk of steel. AR glass fiber maintains long-term tensile strength in concrete due to its high ZrO2 content (≥16%).
Technical Specifications
| appearance | White to off-white fibrous material |
| ZrO2 content (%) | ≥16 |
| fiber length (mm) | 12–36 (chopped strand) |
| tensile strength (MPa) | ≥1700 |
| elongation at break (%) | 2.0–3.5 |
Applications
- Glass fiber reinforced concrete (GFRC) panels and cladding
- Thin precast architectural concrete elements
- Facade panels, columns, and balustrades
- Decorative concrete furniture and planters
- Repair mortars requiring lightweight reinforcement
Key Features
- High ZrO2 content (≥16%) ensures alkali resistance for long-term durability
- Enables ultra-thin concrete sections impossible with steel reinforcement
- Corrosion-free for indefinite durability in exposed concrete
- Compliant with EN 15422 and ASTM C1666 alkali-resistant fiber standards
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