Project 0-4484

Non-Destructive Evaluation of Installed Soil Nails

Steel tendons in test wall

Soil nailed retaining walls are used extensively by the Texas Department of Transportation (TxDOT). Although most of these soil nailed walls have performed satisfactorily, occasional failures have occurred. The researchers examined the soil nail grout integrity problem from two different perspectives. The first involved the development of a non-destructive test (NDT) technique that could be used to detect any defects that may be present in a grouted soil nail. The second involved a study of construction variables (such as
installation procedure, grout consistency, tremie insertion length, borehole diameter, soil nail angle, etc.) that may influence the integrity of the grout column. Among the various construction variables examined under this project, grout rheology and tremie insertion length were found to be the most important parameters that influence integrity of soil nail grout columns.

Priyantha Jayawickrama

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Contact Information

Priyantha W. Jayawickrama, Ph.D.
Associate Professor

Phone: (806) 834-0681