This report describes the installation and monitoring of three test sections
to evaluate dynamic compaction as it was applied as a foundation
treatment for the approach fills of an interchange on the Gilcrease Expressway
(SH 11) in north central Tulsa. The test sections were monitored
to assess the performance of dynamic compaction and to provide the
data base for recommending changes to the construction process as foundation
conditions varied.
Evaluation of the results obtained from the three test sections monitored
during the dynamic compaction process indicated that the process improves
the strength characteristics of strip mining spoil containing clay with
shale fragments and trash. The most consistent improvement occurred in
areas where the thickness of the trash was less than a few feet. The presence
of a groundwater table did not appear to adversely affect the results.
In areas of thicker trash layers, stone columns were successfully
constructed using dynamic compaction. With the exception of the inclinometers,
all instrumentation performed well and provided very good data to
evaluate the dynamic compaction procedure.Final ReportN
