Laboratory Simulation of Corrosion Damage in Reinforced Concrete

This paper reports the results of an experimental program involving several small-scale columns which were constructed to simulate corrosion damage in the field using two accelerated corrosion techniques namely, constant voltage and constant current. A total of six columns were cast for this experim...

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Main Authors: Altoubat, S., Maalej, M., Shaikh, Faiz
Format: Journal Article
Published: 2016
Online Access:http://hdl.handle.net/20.500.11937/33301
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author Altoubat, S.
Maalej, M.
Shaikh, Faiz
author_facet Altoubat, S.
Maalej, M.
Shaikh, Faiz
author_sort Altoubat, S.
building Curtin Institutional Repository
collection Online Access
description This paper reports the results of an experimental program involving several small-scale columns which were constructed to simulate corrosion damage in the field using two accelerated corrosion techniques namely, constant voltage and constant current. A total of six columns were cast for this experiment. For one pair of regular RC columns, corrosion was accelerated using constant voltage and for another pair, corrosion was accelerated using constant current. The remaining pair of regular RC columns was used as control. In the experiment, all the columns were subjected to cyclic wetting and drying using sodium chloride (NaCl) solution. The currents were monitored on an hourly interval and cracks were visually checked throughout the test program. After the specimens had suffered sufficient percentage steel loss, all the columns including the control were tested to failure in compression. The test results generated show that accelerated corrosion using impressed constant current produces more corrosion damage than that using constant voltage. The results suggest that the constant current approach can be better used to simulate corrosion damage of reinforced concrete structures and to assess the effectiveness of various materials, repair strategies and admixtures to resist corrosion damage.
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spelling curtin-20.500.11937-333012017-09-13T15:31:15Z Laboratory Simulation of Corrosion Damage in Reinforced Concrete Altoubat, S. Maalej, M. Shaikh, Faiz This paper reports the results of an experimental program involving several small-scale columns which were constructed to simulate corrosion damage in the field using two accelerated corrosion techniques namely, constant voltage and constant current. A total of six columns were cast for this experiment. For one pair of regular RC columns, corrosion was accelerated using constant voltage and for another pair, corrosion was accelerated using constant current. The remaining pair of regular RC columns was used as control. In the experiment, all the columns were subjected to cyclic wetting and drying using sodium chloride (NaCl) solution. The currents were monitored on an hourly interval and cracks were visually checked throughout the test program. After the specimens had suffered sufficient percentage steel loss, all the columns including the control were tested to failure in compression. The test results generated show that accelerated corrosion using impressed constant current produces more corrosion damage than that using constant voltage. The results suggest that the constant current approach can be better used to simulate corrosion damage of reinforced concrete structures and to assess the effectiveness of various materials, repair strategies and admixtures to resist corrosion damage. 2016 Journal Article http://hdl.handle.net/20.500.11937/33301 10.1007/s40069-016-0138-7 fulltext
spellingShingle Altoubat, S.
Maalej, M.
Shaikh, Faiz
Laboratory Simulation of Corrosion Damage in Reinforced Concrete
title Laboratory Simulation of Corrosion Damage in Reinforced Concrete
title_full Laboratory Simulation of Corrosion Damage in Reinforced Concrete
title_fullStr Laboratory Simulation of Corrosion Damage in Reinforced Concrete
title_full_unstemmed Laboratory Simulation of Corrosion Damage in Reinforced Concrete
title_short Laboratory Simulation of Corrosion Damage in Reinforced Concrete
title_sort laboratory simulation of corrosion damage in reinforced concrete
url http://hdl.handle.net/20.500.11937/33301