Civil Engineering Reference
In-Depth Information
FIGURE 11.9
Strengthening
a concrete bridge with FRP bars.
FIGURE 11.10
Scanning
electron micrograph of concrete
mortar mixed with carbon fibers.
T ABLE 11.3
Typical Ranges of Physical Properties at 28 Days of Glass Fiber
Reinforced Concrete (Neal, 1977)
Property
Value
Flexural strength
21-32 MPa (3.0-4.6 ksi)
Tensile strength
7-11 MPa (1.0-1.6 ksi)
Compressive strength
50-79 MPa (7.2-11.4 ksi)
57 - 143 in. lb/in.
2
Impact strength
10-25 kN/m
1
2
10
6
psi
Elastic modulus
10.5-20.5 GPa
1
1.5 - 3.0
*
2
1.70 - 2.10 Mg/m
3
105 - 130 lb/ft
3
Density
1
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