Title:
Parking Structure Repair by Full-Slab Replacement
Author(s):
Jay H. Paul and Nike R. Keyvan
Publication:
Concrete International
Volume:
15
Issue:
3
Appears on pages(s):
36-38
Keywords:
chlorides; concrete slabs; corrosion; deterioration; parking facilities; renovating; repairs; General
DOI:
Date:
3/1/1993
Abstract:
Describes repair of a severely deteriorated parking structure, which involved a full-slab replacement of a parking deck. Extensive delamination of concrete accompanied significant loss of cross-sectional area of corroded reinforcement. Chloride levels in concrete exceeded the corrosion threshold at all locations tested. The full-depth slab replacement required details to transfer the new slab loadings back to the existing columns. All new reinforcement was epoxy- coated, and reused bars were cleaned and also coated. New drains were added throughout the garage to minimize future corrosion-related problems, and a high-quality elastomeric membrane was installed prior to returning the deck to service.