Detection of accelerated reinforcement corrosion in concrete by ground penetrating radar

Wai Lok Lai, T. Kind, H. Wiggenhauser

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

20 Citations (Scopus)

Abstract

This paper presents a new approach to evaluate corrosion of reinforcement in concrete by ground penetrating radar (GPR). Pulse GPRs were used to monitor the continuous corrosion process in concrete, in which the changes of amplitudes, travel times and short time fourier transform (STFT) spectrograms associated with the bar reflections were continuously measured. The yearly long corrosion process of reinforcement bar was rapidly accelerated within 10 days by impressing 2A direct current across two embedded reinforcement bars serving as anode and cathode. When corrosion started, it was found that the travel times, amplitudes and the frequency spectra from the bar reflection reached a maximum or minimum, but the trends of these parameters were then reversed when the crack became wide open. The results presented in this paper will pave the way for future corrosion characterization using GPR, both in laboratory and in field.
Original languageEnglish
Title of host publicationProceedings of the 13th Internarional Conference on Ground Penetrating Radar, GPR 2010
DOIs
Publication statusPublished - 17 Sep 2010
Externally publishedYes
Event13th Internarional Conference on Ground Penetrating Radar, GPR 2010 - Lecce, Italy
Duration: 21 Jun 201025 Jun 2010

Conference

Conference13th Internarional Conference on Ground Penetrating Radar, GPR 2010
Country/TerritoryItaly
CityLecce
Period21/06/1025/06/10

Keywords

  • Accelerated steel corrosion in concrete
  • Component
  • GPR

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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