Comment
- Noise barriers are an excellent application for GFRP reinforcing where they can utilize the substantially higher tensile capacity (<1000MPa), higher bond strength (11 to 17MPa depending on bar diameter), completely non-corrosive properties as well as conductivity concerns for transit corridors etc.
- Cost savings compared to any specialty steel reinforcing
- In terms of Carbon footprint and Life Cycle Costing, production of GFRP requires much less energy than steel...approximately 90% less environmental impact per ton compared to steel. Producing 1 kilogram of GFRP requires about 3.1 MJ of energy, while steel requires 18 MJ. Its corrosion resistance leads to longer-lasting structures, which reduces the need for demolition, replacement, and new construction over time, thereby lowering overall carbon emissions. A FDOT LCA of Halls River bridge show GFRP bars produce 25.17% less CO2 emissions compared to steel at the product stage.
- Lightweight benefits with GFRP being 1/4 the weight of steel. This weight reduction leads to substantial CO2 savings, ranging from 77% to 85% in some scenarios, when comparing a complete project using GFRP versus steel. Its lighter weight means lower CO2 emissions during transportation, 25.51% less according to the Halls River bridge study.
Submitted October 23, 2025 5:29 PM
Comment on
OPSS 760 – Construction Specification for Noise Barrier Systems
TCP number
000-0265
Comment ID
494
Commenting on behalf of
Comment status