Fiberglass Woven Roving 200gr 300gr 400gr 500gr 600gr 800gr 900gr
Available width: 1m-2m
Available Roll length: 40m 50m 60m 100m
FAQ:
How to choose fiberglass woven roving for stone block wrapping?
Choosing fiberglass woven roving for stone block wrapping requires balancing high structural reinforcement, resin compatibility, and easy handling during block processing (cutting and pulling). Stone block enveloping secures cracked or naturally weak stone blocks (like marble or exotic quartzites) during transport, cutting, and processing.
To choose the correct material, prioritize these core specifications:
1. Fabric Weight (Density)
The weight determines the thickness and tensile strength of the reinforcement shield.
• 200g/m² to 400g/m² (Light-to-Medium): Ideal for standard blocks with few natural fissures or for wrapping smaller blocks. It wets out quickly and wraps easily around sharper block corners.
• 500g/m² to 800g/m² (Heavy-duty): Required for high-value, highly fractured, or very large slabs (e.g., heavily veined marble or fragile quartzites). Heavy woven roving provides the massive tensile strength needed to hold multi-ton blocks together under heavy tension.
2. Weave Type and Flexibility
Woven roving typically features a bi-directional (0°/90°) plain weave pattern.
• Ensure the roving utilizes a plain weave with standard density. This structure distributes pulling forces evenly across the entire surface of the stone block when it is moved by heavy machinery.
• Avoid ultra-stiff variations; the material must be flexible enough to conform cleanly tightly around the squared edges of the block without lifting or trapping air pockets.
3. Sizing and Resin Compatibility
The chemical sizing (surface treatment) on the fiberglass determines how well it bonds to your adhesive.
• Epoxy-compatible sizing: Natural stone reinforcement relies almost exclusively on liquid epoxy resins because of epoxy's superior adhesion to stone surfaces. Verify with the manufacturer that the woven roving is compatible with epoxy.
• Warning: Avoid using roving stitched with standard Chopped Strand Mat (CSM) unless it is explicitly marked epoxy-compatible, as typical CSM contains binders that only dissolve in styrene-based resins (polyester or vinyl ester).
4. Alkali and Chemical Resistance
Stone block wrapping often occurs in wet environments where blocks are exposed to cutting coolants, mud, or lime-rich sludges.
• Choose roving with alkali-resistant (AR) coatings or standard E-glass with high chemical stability. Untreated or low-quality fiberglass will break down when exposed to the high alkaline moisture generated during stone cutting, leading to reinforcement failure.
Quick Selection Checklist
| Feature | Recommended Specification | Reason |
|---|
| Material Type | E-Glass Woven Roving | Most cost-effective, high tensile strength. |
| Weight | 300g/m² to 600g/m² | Balances quick resin wet-out with high break resistance. |
| Weave | Balanced Plain Weave (0°/90°) | Prevents shifting and stabilizes block handling. |
| Treatment | Silane or Epoxy-compatible sizing | Ensures maximum bond strength with stone epoxies. |
| Width | 1.0m to 2.0m (customized to block sizes) | Minimizes overlaps and ensures uniform block enveloping. |
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