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Influence of diurnal and seasonal temperature variations on the detection of corrosion in reinforced concrete by acoustic emission

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journal contribution
posted on 2008-11-05, 16:41 authored by Richard Lyons, Matthew J. Ing, Simon Austin
Chloride rich reinforced concrete prisms were coupled to chloride free prisms and exposed to diurnal and seasonal temperature cycles typical of those found in the UK. Acoustic Emissions (AE) and galvanic currents were continuously monitored and correlated with ambient temperature. AE and galvanic currents were found to emulate the evolution of temperature in the diurnal cycles, although no specific relationship between AE and galvanic current could be obtained. The influence of seasonal variations in galvanic current had no obvious influence on AE Energy per second over the range of corrosion rates studied. The findings suggest that AE is more sensitive to short term (diurnal) changes in corrosion rates than the longer (seasonal) effects. It was hypothesised that this is due to transitory changes in the internal microclimate of the concrete.

History

School

  • Architecture, Building and Civil Engineering

Citation

LYONS, R., ING, M. and AUSTIN, S., 2005. Influence of diurnal and seasonal temperature variations on the detection of corrosion in reinforced concrete by acoustic emission. Corrosion Science, 47 (2), pp. 413-433 [doi:10.1016/j.corsci.2004.06.010]

Publisher

© Elsevier

Publication date

2005

Notes

This article was published in the journal, Corrosion Science [© Elsevier] and the definitive version is available at: http://www.sciencedirect.com/science/journal/0010938X

ISSN

0010-938X

Language

  • en