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Nondestructive Evaluation of Prestressed Concrete Girder

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Damaged Concrete Girder - Ottawa - Resize II


FPrimeC Solutions was retained by Kiewit-Eurovia-Vinci (KEV, Client) to perform Nondestructive Evaluation on a physically damaged prestressed concrete girder in Ottawa LRT Expansion Project. The client was interested to evaluate the current condition of concrete girder through non-intrusive test, evaluate the extent of defects, and assess structural integrity. In the second step, FPrimeC was asked to provide the proper repair solution for the girder.

Nondestructive Evaluation of Prestressed Concrete Girder

The concrete girder was minimally hit by adjacent structural element during the construction phase. Parts of top and bottom flanges were minimally damaged, with spalled concrete and exposed rebar.

Following communication with the client, a test plan involving hammer sounding, Rebound hammer, and Ultrasonic Pulse Velocity (UPV)  was designed and executed to assess structural integrity of the girder. GPR scans were used to verify the location and distribution of prestressing tendons. and detecting potential major voids in concrete elements. Hammer sounding was used to assess potential delamination in the concrete elements.

Prestressed Concrete Girder - Physical Damage - Nondestructive Testing

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