Investigation of Steel I-Beams Strengthened Using CFRP and BFRP Sheets under Torsion

Table 1

The mechanical properties of steel, BFRP, and CFRP sheets.

Material	Yield stress (MPa)	Tensile strength (MPa)	Elastic modulus (GPa)	Rupture ratio (%)
Steel	240	282	200	38
BFRP	–	3,900	230	1.5
CFRP	–	3,115	89	3.5