BFRP Is Different Than Other FRP’s

So how is BRFP based materials different than steel, CFRP and GRFP? It is not the answer to every application but has excellent applications where it makes sense and of course cents. Using an FRP to extend the current life-cycle of infrastructure ravaged by environmental factors including freeze/thaw cycles, exposure to road salts and chlorides to name a few. Some FRP’s can also be used in new design to lengthen the life-cycle from current levels to well in excess of 100 years. Unlike CFRP which is lighter weight than BFRP, it is significantly more expensive and limited in application. GFRP has composition properties very close BFRP in rebar form. Below is a brief chart comparing all four in their rebar forms.

 

Mechanical Properties

Reinforcing Steel

CFRP

GFRP

TXON GRP (BFRP)

Elastic Modulus (GPa)

200

150 - 175

30 - 50

50 – 55

Tensile Strength (MPa)

400-500

1600 - 2400

500 - 1000

940 – 1000

Yield Strain (%)

0.2

-

-

-

Ultimate Strain (%)

30

1 - 1.5

1.5 - 2.0

1.5 - 2.0



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