Combined effects of saline solution and moist concrete on long-term durability of GFRP reinforcing bars

Use of basalt fibers for concrete structures

Most current design guidelines and codes do not allow glass fiber-reinforced polymer (GFRP) bars to be used as compression reinforcement. This study investigates the compressive behavior of longitudinal GFRP bars in reinforced concrete (RC) columns. An experimental campaign on full-scale GFRP RC columns under pure axial load was undertaken using specimens with a 24 x 24 in. (0.61 x 0.61 m) square cross section. The results showed that the GFRP RC specimens behaved similarly to the steel RC counterpart when the longitudinal reinforcement ration is equal to 1.0%. The use of longitudinal GFRP bars was not found to be detrimental to the performance of RC columns, but the contribution of GFRP bars to column capacity was significantly lower than that of the steel bars in the steel RC counterpart. The 3 inch spacing of the GFRP ties strongly influenced the failure mode by delaying the buckling of the longitudinal bars, initiation and propagation of unstable cracks and crushing of the concrete core. Considerations for including GFRP reinforced columns in current ACI practice are discussed.

Behavior of full-scale glass fiber-reinforced polymer reinforced concrete columns under axial load

Properties and applications of FRP in strengthening RC structures: A review

Durability study on interlaminar shear behaviour of basalt-, glass- and carbon-fibre reinforced polymer (B/G/CFRP) bars in seawater sea sand concrete environment

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T. Ivan Campbell

Papers

Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars