SYMPOSIA PAPER Published: 01 January 2000

Small-scale Dynamic Devices for the Measurement of Elastic Stiffness Modulus on Pavement Foundations


There is an increasing number of small-scale dynamic plate test devices available which reportedly measure an elastic stiflhess modulus for the foundation material under test. They exhibit many similarities in the mechanics of operation although there are many subtle differences in mode of operation, transducers utilised and analysis procedure, which lead to variations in the measured results. Three such devices are reviewed in some detail in this paper. Findings from a laboratory investigation of dynamic plate test mechanics are presented which highlight the important role of inertia, both for the device and the soil. Field derived data are then presented which demonstrate the comparative performance of two devices to the FWD and these are then discussed in light of the laboratory findings. Conclusions are then drawn and recommendations made for the key functional requirements of such tests.

Author Information

Fleming, PR
Loughborough University, Leicestershire, England
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Developed by Committee: D04
Pages: 41–58
DOI: 10.1520/STP14759S
ISBN-EB: 978-0-8031-5426-1
ISBN-13: 978-0-8031-2858-3