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

► A durability study of GFRP bars submitted to salt solution and concrete is proposed. ► Mechanical and physical characterizations were performed on aged bars. ► GFRP bars have shown high tensile strength retention after aging. ► No chemical degradation of the polymer as detected after aging. ► Prediction of long-term tensile strength were performed.