Inferring bearing ratio of unbound materials from dielectric properties using GPR: the case of runway safety areas

Benedetto, Andrea and Tosti, Fabio (2013) Inferring bearing ratio of unbound materials from dielectric properties using GPR: the case of runway safety areas. In: 2013 Airfield and Highway Pavement Conference, 09-12 Jun 2013, Los Angeles, USA.

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Abstract

In this paper, the correlation between the dielectric and the strength properties of unbound materials is analyzed, considering that mechanical characteristics of soil depend on particle interactions and assuming that dielectric properties of materials are related to bulk density. The work investigates this topic using ground-penetrating radar (GPR) techniques. In particular, two ground-coupled GPR are used in laboratory and in field experiments to infer the bearing ratio of soil in runway safety areas (RSA). The procedure is validated through CBR tests and in situ measurements using the light falling weight deflectometer (LFWD). A promising empirical relationship between the relative electric permittivity and the resilient modulus of soils is found. The comparison between measured and predicted data shows a reliable prediction of Young's modulus, laying the foundation for inferring mechanical properties of unbound materials through GPR measurements.

Item Type: Conference or Workshop Item (Paper)
ISBN: 9780784413005
Identifier: 10.1061/9780784413005.113
Page Range: pp. 1336-1347
Uncontrolled Keywords: bearing ratio; CBR; dielectric properties; Ground Penetrating Radar; LFWD; mechanical properties; relative electric permittivity; Runaway Safety Area; unbound materials
Subjects: Construction and engineering > Built environment
Construction and engineering > Civil and structural engineering
Computing
Construction and engineering
Depositing User: Fabio Tosti
Date Deposited: 26 May 2016 23:57
Last Modified: 01 Aug 2017 10:34
URI: http://repository.uwl.ac.uk/id/eprint/2211

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