Fiberglass reinforcement for cementitious and alkaline environments
AR (Alkali Resistant) fiberglass is a class of glass-fiber reinforcement developed to retain better reinforcing performance in high-alkalinity material systems, especially concrete and cement mortar. Compared with conventional E-glass, AR glass is the more appropriate choice when the reinforcement will remain in long-term contact with an alkaline cementitious matrix.
AR fiberglass is supplied in several forms depending on the manufacturing process and reinforcement objective, including chopped strands for dispersed reinforcement, CSM mat, reinforcement mesh and continuous roving.
Key benefits
Common AR fiberglass forms
- Chopped Strands: dispersed into cementitious or mortar mixes.
- CSM Mat: random-fiber sheet reinforcement for continuous surface or structural layers.
- Reinforcement Mesh: used in mortar, render, panels and surface-reinforcement systems.
- Roving: continuous glass reinforcement for specialized processing or continuous-fiber placement.
Typical applications
- GFRC/GRC – glass fiber reinforced concrete
- Cement boards, panels and architectural elements
- Repair mortars and cementitious coatings
- Crack-control reinforcement in plaster and render systems
- Precast and thin-section concrete components
AR fiberglass is a material family, not a single grade. Alkali-resistant composition, sizing, cut length, areal weight and matrix compatibility must be confirmed against the current TDS for the specific product.