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المؤلفWang, v
المؤلفBelarbi, Abdeldjelil
المؤلفDawood, Mina
المؤلفKahraman, Ramazan
تاريخ الإتاحة2023-02-15T10:16:34Z
تاريخ النشر2022
اسم المنشورACI Materials Journal
المصدرScopus
معرّف المصادر الموحدhttp://dx.doi.org/10.14359/51735975
معرّف المصادر الموحدhttp://hdl.handle.net/10576/40088
الملخصThis paper presents the findings of a systematic comparison of the corrosion behavior of corrosion-resistant steel reinforcements, including epoxy-coated steel, high-chromium steel, and stainless steel reinforcement in normal-strength concrete (NC) and high-performance concrete (HPC) columns in an accelerated chloride attack environment for 24 months. The corrosion potential and corrosion rate of the reinforcements were monitored using electrochemical methods, and the degradation of the axial compressive capacity of 40 corroded columns over time was obtained and discussed. Findings indicated that corrosion-resistant reinforcements showed significantly better corrosion performance: no corrosion was observed for intact epoxy-coated and stainless steel reinforcements, and less corrosion (54%) was found on high-chromium steel than conventional mild steel in NC, while similar corrosion rates were found for mild steel and high-chromium steel reinforcements in HPC. Results also indicated that HPC provided reliable protection to the embedded reinforcements, showing smaller corrosion rates than those in NC. The measured average corrosion rate of mild steel and high-chromium steel reinforcements in HPC was 17 to 37% of that in NC. In addition, an analytical model was synthesized to predict the axial load-axial shortening relationship of the corroded circular reinforced concrete columns.
راعي المشروعThe funding for this research was provided by the National Priorities Research Program of the Qatar National Research Fund (a member of the Qatar Foundation) under the award No. NPRP 7-410-2-169. The statements
اللغةen
الناشرAmerican Concrete Institute
الموضوعanalytical model
capacity degradation
corrosion
corrosion rate
corrosion-resistant steel reinforcements
high-performance concrete (HPC)
العنوانCorrosion Behavior of Corrosion-Resistant Steel Reinforcements in Normal-Strength and High-Performance Concrete: Large-Scale Column Tests and Analysis
النوعArticle
الصفحات89-102
رقم العدد5
رقم المجلد119
dc.accessType Abstract Only


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