Guide for Evaluation and Repair of Unbonded Post-Tensioned Concrete Structures

This guide provides an introduction to the evaluation and repair of existing concrete structures post-tensioned with unbonded single-strand tendons. It is intended to familiarize owners, licensed design professionals, contractors, suppliers, and other interested parties with the procedures, tests, equipment, and other aspects of the evaluation and repair process. This guide demonstrates how the strength and serviceability of a structure that has experienced deterioration can be evaluated and restored to its original or greater strength and serviceability.