Analysis of the Effect of Elevated Temperature on Reliability of Shear Strengthened Concrete Beams

Abstract:

This article presents the results of experimental research focused on the shear strengthening of reinforced concrete beams with one of the latest and most promising method: NSM - Near surface mounted reinforcement. In recent years, research in this area focuses on combination of epoxy and FRP (fiber reinforced polymer) materials suitable for strengthening concrete elements. A traditional material: stainless steel was also used in this study but in non-traditional T-cross section in terms of strengthening of concrete members. Structural epoxy adhesives offer excellent properties but are very sensitive to elevated temperatures. Effect of increasing temperature gradually degrade their properties and subsequently decreased bond strength, whereas during cooling may acquire significant parts of the original strength. The influences of these factors were investigated in shear resistance of NSM strengthened concrete beams under four point bending at ambient temperature, at elevated temperature and after cooling to ambient temperature.

• Periodical: Key Engineering Materials (Volume 691)
• Pages: 160-171
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.691.160
• Online since: May 2016
• Authors: Peter Sabol*, Sergej Priganc
• Keywords: Concrete, Elevated Temperature, FRP, NSM Strengthening, Shear

References

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