Abstract
The purpose of this study was to define the influence of static longterm loads and cyclic freezing/thawing on the deflections and cracking of concrete beams with non-metallic reinforcement. The rods made of basalt fiber reinforced polymer (BFRP) and hybrid fiber reinforced polymer (HFRP) were used as non-metallic reinforcement. Four series of single span beams were loaded with a single static force in a three-point bending test, then specimens were subjected to 150 freezing/thawing cycles in a large-size climatic chamber. The experimental test results were compared to those obtained from prior carried out short-term tests and theoretical calculations based on ACI 440:1R-06 standard concerning concrete element with non-metallic reinforcement.
Highlights
IntroductionFiber reinforced polymer (FRP) bars are made of continuous fibers (carbon, basalt, glass) as well as of epoxy or polyester resins using the pultrusion method
Fiber reinforced polymer (FRP) bars are made of continuous fibers as well as of epoxy or polyester resins using the pultrusion method
The relatively least amount of research on structures with non-metallic reinforcement concerns the use of basalt fiber reinforced polymer (BFRP) bars
Summary
Fiber reinforced polymer (FRP) bars are made of continuous fibers (carbon, basalt, glass) as well as of epoxy or polyester resins using the pultrusion method. Non-metallic bars are characterized by high resistance to corrosion, which allows to extend the life cycle of the object [3, 5, 18]. They are often used in concrete structural elements exposed to strong environmental aggression, such as foundations, breakwaters and other seaside structures and tanks in sewage treatment plants [8, 18]. The relatively least amount of research on structures with non-metallic reinforcement concerns the use of basalt fiber reinforced polymer (BFRP) bars. Deflection values and cracking of the element in three-point bending conditions were analyzed
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