Pavement_Foundations_Compliance_Testing_Text_and_figs[1].pdf (463.13 kB)
Pavement foundation stiffness testing: a new regime
journal contribution
posted on 2010-08-24, 08:12 authored by Matthew FrostMatthew Frost, Paul FlemingPaul Fleming, Michael Gordon, Jonathan Paul EdwardsTraditionally the construction of the foundations of
paved infrastructure followed a recipe approach where
specified materials are laid using specified plant in an
approved way following a method specification. This
approach is prescriptive and limits material use to those
that meet the recipe assuming a given level of
performance after completion. To encourage
sustainability the UK Highways Agency launched new
pavement and foundation design guidance that is moving
away from this prescriptive approach (IAN 73/06 revised
in 2009, and HA 26/06). The guidance aims to allow a
more flexible design and assessment of the required
foundation performance parameters of strength and
resistance to permanent deformation. This also
introduced a stiffness assessment of the constructed
foundation to confirm compliance with design. In
contrast to the previous regime, the actual performance
of the foundation can influence (and provide savings to)
the design of the structural pavement layers above. The
new guidance permits the use of lightweight
deflectometers to assess stiffness compliance. These are
becoming increasingly common tools in the checking of
foundations of paved infrastructure. This paper presents
the background to the use of deflectometers within the
new guidance, and elements of a recently completed
good practice guide for their use.
History
School
- Architecture, Building and Civil Engineering
Citation
FROST, M.W. ... et al, 2010. Pavement foundation stiffness testing: a new regime. Proceedings of the Institution of Civil Engineers: Transport, 163 (TR3), pp.119–125.Publisher
© Thomas TelfordVersion
- AM (Accepted Manuscript)
Publication date
2010Notes
This is an article from the journal, Proceedings of the ICE: Transport [© Thomas Telford]. It is also available at: http://dx.doi.org/10.1680/tran.2010.163.3.119ISSN
0965-092X;1751-7710Language
- en