Correlation between accelerated steel corrosion in concrete and ground penetrating radar parameters

Title: Correlation between accelerated steel corrosion in concrete and ground penetrating radar parameters
Author(s): B.J. Zhan, W.L. Lai, S.C. Kou, C.S. Poon, W.F. Tsang
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 563 - 571
Total Pages: 9
Nb references: 31
Language: English

Abstract: This paper present the results an experimental study aiming to correlate the mass loss of steel bars as a result of accelerated steel corrosion in reinforced concrete, with parameters measured by 1GHz ground penetrating radar (GPR). The steel bars in concrete were rapidly corroded by impressing a direct current across a pair of steel bars in reinforced concrete specimens, one serving as the anode and the other one serving as the cathode. The direct current impression in a series of specimens was stopped sequentially daily until longitudinal cracks were observed in the last specimen. With the progress of corrosion, it was found that the GPR parameters from the reflection of the corroded bar changed with reducing mass of steel bars. This work has demonstrated the possibility of measuring steel corrosion in concrete by GPR.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00