Experimental Bound Performance of CFRP Anchors

Experimental Bound Performance of CFRP Anchors

Experimental investigations have developed the adopted CFRP anchors in CFRP wrapping or jacketing. It has been proved that the mechanical anchorage can provide confinement and improve square jacketing behaviors as well as prevent premature debonding with design recommendations base on adhesive anchors and natural properties of materials CFRP anchors made from. In this paper, the anchoring bond performance and design theorems are discussed and tested in practical experiments with a total of forty six specimens. Test programs for the fiber bolt and spread tails, the components of CFRP anchors, were carried out under tensile loading. From the observations, failure modes involved concrete cone failure, adhesive debonding, and the combined failure were the key factors related to pullout strength of fiber bolts. For the spread tails, the anchoring strength was restricted due to the break at corner. As a result, the design criteria were improved and made suitable to be applicable.