Civil Engineering Reference
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3000
250
CFRP
2500
200
2000
150
1500
GFRP
100
1000
Hybrid
50
500
Steel
0
0
0.000
0.005
0.010
0.015
0.020
0.025
0.030
Strain
FIGURE 3.10
Typical stress-strain curves for FRP systems. (Courtesy of ACI 440R-07.)
TABLE 3.7
Typical Mechanical Properties for E-Glass/Epoxy Unidirectional
Composites with
V
f
= 0.6
Elastic Constants
GPa
10
6
psi
Longitudinal modulus,
E
L
45
6.5
Transverse modulus,
E
T
12
1.8
Axial shear modulus,
G
LT
5.5
0.8
Poisson's ratio,
v
LT
(dimensionless)
0.28
Strength Properties
MPa
10
3
psi
1020
150
Longitudinal tension,
F
L
tu
620
90
Longitudinal compression,
F
L
cu
40
7
Transverse tension,
F
T
tu
140
20
Transverse compression,
F
T
cu
70
10
In-plane shear,
F
L
su
Interlaminar shear,
F
isu
70
10
Ultimate Strains
%
2.3
Longitudinal tension, ∈
tu
Longitudinal compression, ∈
cu
1.4
0.4
Transverse tension, ∈
tu
1.1
Transverse compression, ∈
cu
1-6
In-plane shear, γ
LT
u
Density, kg/m
3
(lb/in.
3
)
2.1 × 10
3
(0.075)
Source:
Courtesy of Zweben (1989).
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