Standard Test Method for Strength of Fiber Reinforced Polymer (FRP) Bent Bars in Bend Locations

Importancia y uso:

5.1 This test method is intended to determine the bend strength of FRP composite concrete reinforcements, developed at a standard twelve bar diameters of embedment. From this test, a variety of data are acquired that are needed for design purposes. Material-related factors that influence the tensile response of bars include the following: constituent materials, void content, volume percent reinforcement, methods of fabrication, and fiber reinforcement architecture. Similarly, factors relevant to the measured tensile response of bars include specimen preparation, specimen conditioning, environment of testing, specimen alignment, and speed of testing. The results may be used for material specifications, research and development, and structural design and analysis.

Note 1: Two FRP bends are tested simultaneously in this test method, but in some cases, only one bend may fail. While resulting in a valid failure, notice should be taken that only one bend has been effectively measured and that the final compiled test results using this method could differ from those resulting from single FRP bend testing.

Subcomité:

D30.10

Referida por:

D7957_D7957M-22, D4762-23

Volúmen:

15.03

Número ICS:

83.120 (Reinforced plastics), 91.080.40 (Concrete structures)

Palabras clave:

bent bar; bend strength; concrete reinforcement; fiber reinforced polymer (FRP); stirrup;