LABORATORY INVESTIGATION OF PLASTIC-GLASS FIBER REINFORCEMENT FOR REINFORCED AND PRESTRESSED CONCRETE; PRESTRESSED CONCRETE.
Rept. no. 2.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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The investigation consisted of the evaluation of plastic-glass fiber elements, commonly called fiber glass, as prestressing tendons in concrete members and the design of concrete members to utilize the properties of fiber- glass elements. Fiber-glass-reinforced, prestressed concrete beams were tested in flexure for ultimate load and deflection. Long-duration load tests were begun and the final results will be published in the next report of this series. The fiber-glass-reinforced, prestressed concrete beams were compared both analytically and experimentally with similarly designed steel-reinforced, prestressed concrete beams with the following parameters held constant cross- sectional area of prestressing tendons, prestress tension applied to tendons, and beam dimensions. Several methods for anchoring the fiber-glass tendons were investigated, and a method using expanding cement was found to be suitable. The sand-coated fiber-glass tendons did not develop sufficient bond, and an improved bonding technique wrapping the tendons in fiber-glass mesh tape was developed. Test results indicate that fiber-glass-reinforced, prestressed beams have about the same ultimate load and total energy absorbed as steel-reinforced, prestressed beams and that such beams should be an efficient dynamic structural material when the bonding technique is further improved. Recommendations for further investigations are made. Author
- Ceramics, Refractories and Glass
- Laminates and Composite Materials
- Structural Engineering and Building Technology