Accession Number:

AD0630600

Title:

LABORATORY INVESTIGATION OF PLASTIC-GLASS FIBER REINFORCEMENT FOR REINFORCED AND PRESTRESSED CONCRETE. REPORT I. PLAIN REINFORCED CONCRETE,

Descriptive Note:

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s):

Report Date:

1966-02-01

Pagination or Media Count:

61.0

Abstract:

The investigation consisted of the evaluation of plastic -glass fiber elements, commonly called fiber glass, that could be used as plain reinforcement in concrete members and the design of concrete members to utilize the properties of the fiber-glass elements. Fiber-glass rods were tested for tensile strength, long-duration load, and elasticity and bond in concrete. Utilizing these essential properties, concrete beams were designed with fiber -glass rods as the tension elements. The fiber-glass reinforced concrete beams were compared both experimentally and analytically with similarly designed steel reinforced concrete beams on the basis of ultimate flexural strength, deflection, and long- duration load. The low modulus of elasticity of the fiber-glass rods together with the lack of a good bond between the rods and the concrete, caused the neutral axis of the beam to move up, thus reducing the compression area of the beam. The beams then failed in compression before the fiber-glass reinforcement could be fully utilized. While ineffective as plain reinforcement in concrete beams, fiber-glass rods, with their low modulus of elasticity and high strength, theoretically show promise if used as tension elements for prestressing concrete by the pretensioning method. Author

Subject Categories:

  • Ceramics, Refractories and Glass
  • Laminates and Composite Materials
  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE