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Acoustic emission-based mathematical procedure for quantification of rebar corrosion in reinforced concrete


Affiliations
1 Department of Civil Engineering, Vishwakarma Institute of Information Technology, Pune 411 048, India
2 Department of Civil Engineering, Thapar University, Patiala 147 004, India
 

One of the most important causes for deterioration of reinforced concrete structures is corrosion of steel rebar in concrete. Acoustic emission (AE) technique is reported as an effective non-destructive tool for qualitatively identifying the onset of rebar corrosion. The applicability of AE for quantitative assessment of rebar corrosion in concrete is investigated here. Statistical analysis of experimental results under accelerated corrosion confirmed a promising relationship between gravimetrical rebar mass loss and AE measurement. The efficacy of the developed mathematical model was further confirmed under realistic prolonged corrosion exposure. Thus, a new procedure has been developed for quantification of rebar corrosion through experimental verification.

Keywords

Acoustic emission, corrosion, mathematical modelling, non-destructive testing, reinforced concrete
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  • Acoustic emission-based mathematical procedure for quantification of rebar corrosion in reinforced concrete

Abstract Views: 251  |  PDF Views: 90

Authors

Shilpa Patil
Department of Civil Engineering, Vishwakarma Institute of Information Technology, Pune 411 048, India
Shweta Goyal
Department of Civil Engineering, Thapar University, Patiala 147 004, India

Abstract


One of the most important causes for deterioration of reinforced concrete structures is corrosion of steel rebar in concrete. Acoustic emission (AE) technique is reported as an effective non-destructive tool for qualitatively identifying the onset of rebar corrosion. The applicability of AE for quantitative assessment of rebar corrosion in concrete is investigated here. Statistical analysis of experimental results under accelerated corrosion confirmed a promising relationship between gravimetrical rebar mass loss and AE measurement. The efficacy of the developed mathematical model was further confirmed under realistic prolonged corrosion exposure. Thus, a new procedure has been developed for quantification of rebar corrosion through experimental verification.

Keywords


Acoustic emission, corrosion, mathematical modelling, non-destructive testing, reinforced concrete

References





DOI: https://doi.org/10.18520/cs%2Fv109%2Fi5%2F943-948