Title:
Rehabilitating Parking Structures With Corrosion-Damaged Button-Headed Post-Tensioning Tendons--Part 2
Author(s):
Thomas Nehil
Publication:
Concrete International
Volume:
14
Issue:
3
Appears on pages(s):
24-30
Keywords:
concrete slabs; deterioration; evaluation; parking facilities; post-tensioning; reinforcing steels; repairs; General
DOI:
Date:
3/1/1992
Abstract:
Six basic rehabilitation concepts that cover the range of applicable procedures for dealing with structures containing corrosion-damaged unbonded paper-wrapped button-headed post-tensioning tendons are described. The six concepts are presented in a hierarchical order that relates to the severity of tendon damage. The lack of a preformed duct through the concrete (as is provided in monostrand post-tensioning) and the fact that very little bonded conventional reinforcement was used makes restoration of structures built using unbonded paper-wrapped button-headed post-tensioning tendons necessarily different from that of other types of post-tensioned structures.