Civil Engineering Reference
In-Depth Information
Table 3.2
ASTM test methods for FRP reinforcement
Property
ASTM test methods
Cross-sectional area
D7205 and D7205M
Longitudinal tensile strength and modulus
D7205 and D7205M
Shear strength
D7617 and D7617M
Creep properties
D7337 and D7337M
Flexural properties
D790 and D4476
Coefficient of thermal expansion (CTE)
E831 and D696
Glass transition temperature
E1356, E1640, D648, and E2092
Volume fraction
D3171, D2584, and C882
Figure 3.1
Measurement of the cross-sectional area of an FRP bar by the Archimedes
principle.
the three that were specifically developed for FRP bars to be used in con-
crete are briefly discussed in the following.
ASTM D7205/D7205M, Tensile Properties of Fiber Reinforced Polymer
Matrix Composite Bars.
The area of the cross section of the FRP bar
specimen is measured by applying the Archimedes principle (Figure 3.1).
A bar sample of known length is immersed in a graduated cylinder filled
with water. The increase of volume after immersing the sample is divided
by the sample length to calculate the cross-sectional area. At least five
measurements per lot of bars are required.
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