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Performance parameters and target values for construction of UK road foundations

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posted on 07.08.2008, 09:19 authored by Paul FlemingPaul Fleming, C.D.F. Rogers, Matthew W. Frost
There is impetus in the UK to move away from empirical design of road foundations and method specification towards analytical design assured by end product testing during construction. Current research at Loughborough University, sponsored by the Highways Agency, is aimed at introducing such a performance based specification. This paper introduces the philosophy behind the research and explains the primary objectives. Selective results are presented from a full-scale field trial construction of a road foundation on a soft subgrade, which was characterised by a variety of field devices and subsequently trafficked. This paper focuses on insitu stiffness modulus (ER), measured by several devices for comparison. The setting of suitable target values for field ER is seen as a key factor and the influence of inherent variability in material response a concern. The discrepancy between devices and the problem of long-term stability are discussed and highlighted as a key focus for the remainder of the work.

History

School

  • Architecture, Building and Civil Engineering

Citation

FLEMING, P.R., ROGERS, C.D.F. and FROST, M.W., 1998. Performance parameters and target values for construction of UK road foundations. IN: Nordal, R.S. and Refsdal, G. (eds.). Proceedings of the 5th International Conference on the Bearing Capacity of Roads and Airfields, Norwegian University of Science and Technology, Trondheim, Norway, Vol. 3, pp.1491-1501

Publisher

© Tapir Academic Press

Publication date

1998

Notes

This is a conference paper.

ISBN

9788251913461

Language

en