Two long-term load tests were conducted as part of an ongoing investigation of the use of CFRP straps to enhance the shear capacity of reinforced concrete beams. One strengthened T-beam specimen was exposed to a sustained load for,260 days while a second specimen was exposed to 2.1 million load cycles. After the long-term tests, both specimens were tested to failure to determine what impact, if any, the long-term loading had on the ultimate beam capacity and the CFRP strap behaviour. It was found that creep in the concrete meant that the sustained load specimen failed at a lower load due to a reduced lever arm between the concrete and the longitudinal steel. On the other hand, the cyclic load specimen had the same ultimate capacity as a specimen that was not placed under a long-term load. The CFRP strap strains were affected by the type of long-term loading with the straps on the cyclic load specimen having higher residual strains. This is believed to be due to the fact that load cycling causes the crack interface to deteriorate leading to larger crack widths and higher strap strains. The straps in both the long-term specimens had reserve strength capacity at the beam failure load.
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