GRL Engineers is now offering Gamma-Gamma Logging Service (GGL) in the United States.
Gamma-Gamma Logging is a non-destructive test method used to assess the concrete integrity of drilled shafts through gamma-density correlation.
It is a testing procedure that can be conducted quickly and provides highly repeatable test results, while objectively evaluating the integrity and relative concrete quality inside and outside of the reinforcing cage.
PVC access tubes (2 in/50 millimeters in diameter) are attached to the steel reinforcing cage before concrete is poured in the excavation. Nevertheless, if testing was not initially planned, an engineer can perform GGL by using core holes drilled through the concrete.
Source: Pile.com
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