Influence of time-dependent corrosion on strength and ductility of reinforcing steel bars exposed to natural and aggressive environments
The reinforcement corrosion is a major and most frequent reason of degradation for reinforcedconcrete (RC) structures throughout the world, leading to their premature deterioration before design life was attained. Corrosion weakens the mechanical properties of rebar by ingress of aggressive ions due...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Erbil Polytechnic University
2023-09-01
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| Series: | Polytechnic Journal |
| Subjects: | |
| Online Access: | https://polytechnic-journal.epu.edu.iq/home/vol12/iss1/6 |
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| Summary: | The reinforcement corrosion is a major and most frequent reason of degradation for reinforcedconcrete (RC) structures throughout the world, leading to their premature deterioration before
design life was attained. Corrosion weakens the mechanical properties of rebar by ingress of
aggressive ions due to various environments. In this study, a total of 99 specimens with six
different diameters were tested, for three exposure periods, and six different environments, to
assess the influence of corrosion on mechanical properties of reinforcing bars. Degradation
relationships of strength and ductility with exposure period and rebar diameter, were analyzed,
and three equations were proposed to formulate the relations. It was found that, the ultimate
strength of 8.6% of the corroded bars falls below the original yield strength; after 5 years of
exposure in natural atmosphere, reduction in mechanical properties was insignificant; a detergent
solution environment could cause the strength loss of 24.8%. |
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| ISSN: | 2707-7799 |