Experimental evaluation and design of unfilled and concrete-filled FRP composite piles, task 3 - FRP composite pile flexural testing.
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2014-06-01
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Abstract:The overall goal of this project is the experimental evaluation and design of unfilled and concrete-filled FRP
composite piles for load-bearing in bridges. This report covers Task 3, FRP Composite Pile Flexural Testing.
Hollow and concrete filled fiber reinforced polymer (FRP) piles were tested in four point bending to examine
degradation in stiffness, ultimate strength, and loss of concrete‐FRP composite action due to pile driving and cyclic
loading. Testing showed a high level of variability in the ultimate strength of the piles, but all driven and load-cycled
samples broke within the upper and lower bounds of the control piles. This series of tests showed no degradation in
stiffness during static tests in the piles due to driving or cyclic loading. However, driving and cyclic loading appear
to affect composite action between the FRP shell and concrete
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