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|Title: ||The assessment of coarse granular materials for performance based pavement foundation design|
|Authors: ||Lambert, John Peter|
Fleming, Paul R.
Frost, Matthew W.
|Keywords: ||Performance assessment|
Dynamic plate test
|Issue Date: ||2008|
|Publisher: ||© Taylor & Francis|
|Citation: ||LAMBERT, J.P., FLEMING, P.R. and FROST, M.W., 2008. The assessment of coarse granular materials for performance based pavement foundation design. International Journal of Pavement Engineering, 9 (3), pp. 203-214|
|Abstract: ||The need to use more recycled and marginal materials in pavement foundations is
encouraging moves towards performance based specifications. Such an approach needs
data on the fundamental material parameters of stiffness and resistance to permanent
deformation (strength) to allow analytical design and achieve comparable compliance
testing on site. Whilst a number of laboratory and field tests to measure such performance
exist, all have limitations relative to either the particle size of materials that can be tested
and/or correlation between the laboratory and field derived data.
This paper presents the development of a large scale resiliently lined steel laboratory
material box tests proposed for routine material assessment. The test utilises a Lightweight
Deflectometer, similar to that proposed for field compliance testing to provide
performance data from compacted large particle size granular materials. The system
developed utilises a “soft” base condition to replicate typical subgrade stiffness and allows
wetting and drying of materials to assess their environmental stability. The results show
that such a test can simply provide suitable data for performance based design, but
consideration needs to be given to the water content of materials, the time of testing after
compaction, and the use of appropriate boundary conditions. These findings have both
implications not only for the developed tests but for field compliance testing of pavement
|Description: ||This is an electronic version of an article published in the journal, International Journal of Pavement Engineering [© Taylor & Francis]. The definitive version is available online at:
|Version: ||Accepted for publication|
|Appears in Collections:||Published Articles (Civil and Building Engineering)|
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