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Title: Axial Compression Capacity of Concrete Columns Reinforced with GFRP and Stainless Reinforcement

Author(s): J.W. Wright and C.P. Pantelides

Publication: Symposium Paper

Volume: 351


Appears on pages(s): 1-18

Keywords: carbon steel, columns, concrete, corrosion, glass fiber reinforced polymer, stainless clad, stainless steel.

DOI: 10.14359/51734671

Date: 4/1/2022

Axial compression performance of concrete columns reinforced with GFRP bars and spiral, 2304 duplex stainless bars and spiral, and 316L stainless clad bars, in varying combinations is examined after exposure to accelerated corrosion. The hybrid columns were reinforced with a combination of metallic and GFRP reinforcement. After corrosion exposure the columns were tested under axial compression to failure. Columns with GFRP vertical bars and stainless steel spiral were less corrosion resistant and had smaller axial load capacity than hybrid columns with stainless clad or stainless steel vertical bars and GFRP spiral. Columns reinforced with stainless steel spiral achieving two to three times the maximum axial displacement of columns with GFRP spiral. Axial compression capacity of hybrid columns in both corroded and uncorroded conditions was modeled using concrete confinement models for metallic and GFRP reinforcement with good agreement.