External post-tensioning of cfrp tendons using integrated sleeve-wedge anchorage

Strengthening of structures using external post-tension CFRP systems have proven to be anefficient method as such system increases the structural capacity and reduces cracks and deflection. Sufficient anchorage is of significant importance since the anchorage provides the connection between the post-tensioning system and the remaining structure.

A special designed integrated sleeve-wedge anchorage has therefore been designed to improve the reliability of the mounting procedure, reduce the possible modes of failure and thus provide desired anchorage. The present research shows that adequate anchorage was obtained using the novel anchorage and that its behaviour is stable and predicatble when short term static load is applied.

Desired strengthening was also observed in external post-tensioning on reinforced concrete T-beams. The requirements and definitions on a stable anchorage of CFRP tendons however still need to be investigated further.