Influence of high temperatures on the bond between carbon Fibre-Reinforced polymer bars and concrete

The effect of corrosion on reinforced concrete structures can lead to significant economic losses. Therefore, steel bars used in the must be replaced with a different material that withstand water contact without causing and ensure safe operation structure during its lifespan, even adverse weather. Carbon-fibre-reinforced polymer (CFRP) are one materials replace they have already been applied as substitute previously. This study analyses bonding these at high temperatures for longer time periods. It presents an experimental plan involves series pullout trials ages, days, thermal conditions CFRP rods either treated ribbed or underwent sand-ribbed surface treatment. Some compression tests each mixture were performed same ages determine influence concrete. completed some complementary using optical microscopy, scanning electron microscopy (SEM), atomic force (AFM), from evaluated samples. temperature significantly affected by diminishing their bond stress did not affect sanded bars. uneven behaviour resistance age 180 d is justified.