Cracking, water leakage, efflorescence, and brown residue at a reinforced concrete tunnel wall raised concerns about embedded steel and the extent of deterioration within the section. This investigation used field testing and exploratory coring to evaluate corrosion risk and help define where further attention was needed.

Case study analyzing extensive concrete spalling and rebar corrosion at the Hall of Records building. Findings indicate corrosive soil, high chlorides & sulfates, and carbonation as primary causes of deterioration. Evaluation involved NDT, core testing, and chemical analysis. Conceptual repair options and recommendations are discussed, including the use of FRP to strengthen cracked columns.