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Type: Journal article
Title: Ground response to rolling dynamic compaction
Author: Scott, B.T.
Jaksa, M.
Mitchell, P.
Citation: Geotechnique Letters, 2019; 9(2):99-105
Publisher: ICE Publishing; Thomas Telford
Issue Date: 2019
ISSN: 2045-2543
Statement of
B. Scott, M. Jaksa and P. Mitchell
Abstract: Rolling dynamic compaction (RDC) is typically used for improving ground in situ or compacting fill in thick lifts. In many project applications, the effects of RDC are verified by way of testing that is undertaken pre- and/or post-compaction. This study presents results from a full-scale field trial that involved placing an earth pressure cell (EPC) and accelerometers at a depth of 0·7 m within a 1·5 m thick layer of homogeneous sandy gravel to measure the response to RDC in real-time. Double integration of acceleration–time data enabled settlement to be inferred, while the EPC measured the change in stress due to impact. The maximum change in vertical stress recorded over the 80 passes undertaken was approximately 1100 kPa. During a typical module impact, the loading and unloading response occurred over a duration of approximately 0·05 s. The acceleration response of RDC was measured in three orthogonal directions, with the vertical accelerations dominant.
Keywords: Compaction; field instrumentation; ground improvement
Rights: Published with permission by the ICE under the CC-BY 4.0 license. (
DOI: 10.1680/jgele.18.00208
Appears in Collections:Aurora harvest 8
Civil and Environmental Engineering publications

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