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Fiberglass Rebar Codes

Mike Simon | August 1, 2023

While it has been around for 40+ years, glass-fiber reinforced polymers (GFRP or fiberglass rebar) is a rapidly developing space. It’s gained traction historically because of superior material properties, based upon this interest it has progressed in a deliberate way from academic research to codes, test methods, and specifications. Furthermore this has also been accompanied by a more recent and dramatic decrease in the cost of fiberglass rebar, which is now often cheaper than black steel rebar.

Design

Standard Type Title Original Date of Publication
ACI 440.01 Guide Guide for the Design and Construction of Structural Concrete Reinforced with Fiber-Reinforced Polymer Bars 2006
ACI 440.6 Specification Specification for Carbon and Glass Fiber-Reinforced Polymer Bar Materials for Concrete Reinforcement 2008
AASHTO GFRP-1 Specification ” AASHTO LRFD Bridge Design Guide Specifications for GFRP-Reinforced Concrete Bridge Decks and Traffic Railings 2019
TMS 402/602 Code Appendix D “Glass Fiber Reinforced Polymer Reinforced Masonry” 2022
ACI 440.11 Code Building Code Requirements for Structural Concrete Reinforced with Glass Fiber-Reinforced Polymer (GFRP) Bars—Code and Commentary 2022

Material

Standard Type Title Original Date of Publication
D7205 Test Method Tensile Properties of FRP Composite Bars 2006
D7290 Practice Evaluating Material Property Characteristic Values for Polymeric Composites 2006
D7337 Test Method Tensile Creep Rupture of FRP Composite Bars 2007
D7522 Test Method Pull-Off Strength for FRP Laminate Systems Bonded to Concrete or Masonry Substrates 2009
D7565 Test Method Tensile Properties of FRP Composites Used for Strengthening of Civil Structures 2009
D7616 Test Method Overlap Splice Shear Strength Properties of Wet Layup FRP Composites Used for Strengthening Civil Structures 2011
D7617 Test Method Transverse Shear Strength of FRP Composite Bars 2011
D7705 Test Method Alkali Resistance of FRP Composite Bars Used in Concrete Construction 2012
D7913 Test Method Bond Strength of FRP Compose Bas to Concrete by Pullout Testing 2014
D7914 Test Method Strength of FRP Bent Bars i Bend Locations 2014
D7957 Specification Solid Round Glass FRP Bars for Concrete Reinforcement 2017
D7958 Test Method Performance for FRP Composite Bonded to Concrete Using Beam Test 2017
D8337 Test Method Bond Properties of FRP Composite to Concrete Substrate sing Single-Lap Shear Test 2021
D8505 Specification Basalt and Glass FRP Bars for Concrete Reinforcement 2023

Bold lines are of particular interest to the design professional

This is meant to be a start and not an exhaustive list of the relevant codes for the design professional interested in GFRP. There are many great resources beyond the standards setting bodies like ACI’s NEx and industry publications like Composites World.

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