Pultruded CFRP rods for ground anchor application

Carbon fiber reinforced plastic (CFRP) rods with spiral surface indentation s have been developed as tension elements in prestressed concrete and as an chor tendons in place of conventional prestressing steels. The indented typ e CFRP rods have sufficient bonding strength to concrete without sacrificin g the high tensile strength. As a low cost manufacturing process of the adv anced composite, the pultrusion processing method was applied to make CFRP rods continuously. New ground anchors using the pultruded CFRP rods were in stalled for slope stabilization at Fukuchiyama, Kyoto in March this year.