APPARATUS FOR ASSESSING DURABILITY OF STRESSED FIBER REINFORCED POLYMER (FRP) BARS

摘要

An apparatus for testing a specimen consisting of a fiber reinforced polymer (FRP) bar in tension while embedded in hardened concrete and subjected to long term environmental exposure. The apparatus includes a steel channel defined by two longitudinally extending parallel steel plates and a pair of unitary plates with one unitary plate at each of the channel. Each of the unitary plates include a U-shaped opening while a forward one of the unitary plates also defines four threaded openings and four bolts passing therethrough for increasing strain on the specimen. A pair of steel tube grips attached to the FRP bar with epoxy are also provided.

主权项

1. An apparatus for testing durability of stressed fiber reinforced polymer (FRP) bars in tension and encased in hardened concrete after long term environmental exposure by maintaining the bars in a stressed state during such exposure, said apparatus comprising:
a) a steel channel section with a U-shaped opening on each end of said channel; b) four bolts and nuts at a first of said U-shaped openings for positioning and stressing an FRP bar embedded in hardened concrete; and c) a threaded steel tube grip at each of the two ends of the FRP bar with FRP bar bonded to said threaded steel tubes using epoxy.