REPAIRS, MODIFICATIONS, AND STRENGTHENING WITH POST-TENSIONING

Post-tensioning can be used for repairs, modification and strengthening of reinforced concrete and post-tensioned structures. The article describes some of the commonly used techniques and precautions for detensioning tendons, repairs and re-stressing of tendons. The article gives guidance to practicing engineers and contractors on techniques that can be used to create new openings in existing posttensioned structures. The article also explores techniques for the strengthening of existing structures by external post-tensioning.