Research Article

Flexural Behavior of Concrete Beam Strengthened by Near-Surface Mounted CFRP Reinforcement Using Equivalent Section Model

Table 2

Material properties.

MaterialProperties

Concrete1Compressive strength (MPa)31.3

Tension steel reinforcement (D10)1Yield strength (MPa)436
Tensile strength (MPa)562
Diameter (mm)9.53
Area (mm2)71.33

Compression steel reinforcement (D13)1Yield strength (MPa)481
Tensile strength (MPa)608
Diameter (mm)12.7
Area (mm2)126.7

CFRP strip (PL, smooth surface)1Thickness (mm)1.4
Tensile strength (MPa)2482.5
Elastic modulus (GPa)167
Ultimate strain (%)1.48

CFRP rod (TR, smooth surface)1Design thickness (mm)10
Tensile strength (MPa)1500
Elastic modulus (GPa)100
Ultimate strain (%)1.5

CFRP rod (RD, deformed surface)2Diameter (mm)9
Tensile strength (MPa)1878
Elastic modulus (GPa)121.42
Ultimate strain (%)1.55

1: from supplier; 2: from tests performed by authors according to [22].