FRP Rebar

FRP (Fiberglass Reinforced Polymer) is a composite material made of a polymer matrix reinforced with fibers. The fibers are usually glass (in fiberglass), basalt, carbon, or aramid. The polymer is usually an epoxy, vinyl ester, or polyester thermosetting plastic. FRP rebar has been developed as a non-corrosive alternative to steel for concrete reinforcement. FRP rebar is suitable for any structural or architectural application where a material that is corrosion resistant, lightweight, or non-conductive is required. FRP rebar is the ideal solution for concrete reinforced projects, such as bridges, barrier walls, decks, diaphragm walls (soft eye), tunnel segments, garages, pavements, Wharfs, sea walls, wave breakers retaining walls and fence systems.

FRP Rebar
Comparison SnapshotBFRPSteelGFRPStainless Steel
Strength+2.5XTraditional+2.0XTraditional
Weight1/4XHeavy1/4XHeavy
Carbon FootprintLowBadLowBad
ConductivityNoYesNoYes
Saltwater DeteriorationNo1 DayNo2-5 years
Easy to TransportBar or CoilHeavy, Long & BendsBar or CoilHeavy, Long & Bends

GFRP Rebar Properties

Designation of barsNominal cross-sectional area
Ultimate tensile strengthTensile Modulus of elasticityTransverse shear strength
(CSA S807 Table 1)
(CSA S807 Table 1)
(ASTM D7205)(ASTM D7205)(ASTM D7617)
mm2
MPa GPakN
#632110546-707
#850105046-7023
#1071100246-7031
#1312998146-7054
#1519996046-7079
#2028489846-70109
#2238787746-70156
#2551084346-70188
#3064579646-70202
#3281975846-70220
#35100672246-70223
  • Tensile properties were calculated using nominal cross-sectional areas.
  • The designers should contact the bar manufacturer for the latest updates of this technical data sheet

Comparison table

Cost and Performance comparisonSFT-GFRP rebarBlack steel rebarEpoxy coated rebar (ECR)Galvanized steel rebarStainless steel rebar
Cost comparison
Life Cycle AdvantageLonger +++++ Short Longer+Longer++Longer++
Initial cost of materialGrade I – comparable to black steel rebar
Grade II – Comparable to Epoxy coated rebar
NoneHighHighHigher ++
Transport savingsYes No No No No
Concrete cover savings Possible No Possible PossiblePossible
Labor & Injury Savings during installation Yes No No No No
Corrosion Resistance
Corrosion risk profile NoVery HighYesPossible Low
Contact corrosion/ Corrosion at bendsNo Yes SusceptibleSusceptibleSusceptible
Cathodic protection neededNo Yes Limited to coatingSusceptibleSusceptible
Acid rain, Acid soils, marshesNo Yes Limited to coatingSusceptibleSusceptible
Rust Expansion/Rust stainingNo Yes Limited to coatingSusceptibleSusceptible
Alkali in concreteNo Yes Limited to coatingSusceptibleSusceptible
Chloride, Sulphide stress corrosionNo Yes Limited to coatingSusceptibleSusceptible
Mechanical Advantages
Thermal InsulatorYesPoorPoorPoorPoor
Electrical Insulator/ Non-MagneticYesPoorPoorPoorPoor
Weight1/41111
Long term bond concreteExcellentPoorGoodPoorGood
Tensile PropertiesExcellentOkayGoodGoodExcellent