GFRP mesh standards: grid tests, bar specifications and design codes

Start with the grid-specific reference

ISO publishes ISO 10406-4:2025 for FRP grid test methods. Its scope concerns rigid arrangements of connected FRP bars used in concrete. This is a more specific starting point for a grid-testing discussion than an undifferentiated reference to FRP reinforcement. The manufacturer still needs to supply the report for the actual product.

Read the part number and the edition

The 2025 Part 1 in the ISO 10406 series concerns bars, while Part 4 concerns grids. Older product documents may cite an earlier edition with a different scope. Ask which edition was used for the reported test and how the tested specimen relates to the product being supplied.

Separate a bar specification from a mesh claim

ASTM D7957/D7957M is identified by its publisher as a GFRP reinforcing-bar specification. A reference to it in a supplier brochure does not, by itself, document the assembled grid or its junction behavior. Ask the supplier to distinguish bar-related evidence from evidence for the mesh product.

Separate design rules from product test evidence

ACI CODE-440.11-22 concerns structural concrete reinforced with GFRP bars. Its publisher identifies a specific ASTM bar-material edition in the code description. A design reference and a product test report serve different purposes; project acceptance requires the designer to resolve the applicable product, design framework and document editions.

For repair systems, identify what was assessed

EOTA’s EAD 340392-00-0104 concerns composite reinforced mortar strengthening systems and defined components. The intended use, mesh, matrix and related components matter. Do not assume an assessment for one system transfers to a separately supplied mesh or a different installation system.

What to ask Yuanda for

Start with the selected grid size, bar diameter, dimensions and application. Request the product data sheet and the full test report required by the project. The currently published Yuanda CTC cover identifies composite reinforcement mesh, but the cover alone does not establish a test method, numerical result or conformity to the standards discussed here.

Published Yuanda product reference

The epoxy resin mesh product page lists grid sizes from 50 × 50 mm to 300 × 300 mm, with selected bar diameters from 2.5 to 10 mm and custom widths of 300–3,000 mm. Compare the exact listed combinations and review available documents.

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