INVESTIGATION OF GLASS FIBERS AS REINFORCEMENT FOR PRESTRESSING CONCRETE

The following conclusions were reached: (1) fiber glass rods do not show promise for use as tendons for post-tensioning concrete structures; (2) fiber glass rods do show promise for use as tendons for pre-tensioning concrete structures by bonding the rods to the concrete; (3) fiber glass rods having an ultimate strength in excess of 200,000 psi. based on gross cross-sectional area and a safe working stress of approximately 100,000 psi. can be fabricated; and (4) fiber glass rods show definite promise of resisting unusual corrosion conditions but exposure tests will be necessary.