10-23: Structural Condition Assessment of Concrete Cooling Towers

As reinforced concrete cooling towers age, their harsh operating environments can lead to deterioration and structural distress. Both mechanical and natural-draft cooling towers present unique conditions inherent to their type of construction and exposure conditions. With time, process and environmental exposure conditions render the towers susceptible to corrosion of embedded steel reinforcing, concrete cracking and spalling, and in cold climates freeze-thaw deterioration. Operational cycling and construction defects can accelerate deterioration. Condition assessment of cooling tower structures is essential to identify safety and structural concerns, determine the root cause of distress, and plan maintenance needs. Condition assessments typically involve visual inspections and various nondestructive testing techniques. Depending on observed conditions, concrete core sampling and laboratory testing are used to characterize materials quality and durability. Structural analysis may be re