A practical approach to falling-weight deflectometer (FWD) data reduction Journal Articles

abstract

• The authors present a simplified methodology for preprocessing falling-weight deflectometer (FWD) data, which identify a pseudo-static pavement response to surface loading. This allows one to employ static analysis to back-calculate the mechanical properties of the pavement–subgrade system. It is shown that the subgrade modulus can be identified, independent of the details of the pavement structure itself, at least for a two-layer system. The quality of the effective shear modulus is sensitive to the value of Poisson's ratio selected.Key words: pavement–subgrade system, subgrade modulus, back-calculation, FWD.

authors

• Stolle, Dieter
• Guo, Peijun

status

• published 

publication date

• April 1, 2005

has subject area

• 0905 Civil Engineering (FoR)
• 0907 Environmental Engineering (FoR)
• Geological & Geomatics Engineering (Science Metrix)

published in

• Canadian Geotechnical Journal  Journal

keywords

• Engineering
• Engineering, Geological
• FWD
• Geology
• Geosciences, Multidisciplinary
• Physical Sciences
• Science & Technology
• Technology
• back-calculation
• pavement-subgrade system
• subgrade modulus

Digital Object Identifier (DOI)

• 10.1139/t04-098

start page

• 641

end page

• 645

volume

• 42

issue

• 2