Corrosion and chloride diffusivity of reinforced concrete cracked under sustained flexure

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ÖZYURT ZİHNİOĞLU N., Söylev T. A., ÖZTURAN T., Pehlivan A. O., NİŞ A.

Teknik Dergi/Technical Journal of Turkish Chamber of Civil Engineers, cilt.31, sa.6, ss.10315-10337, 2020 (SCI-Expanded, Scopus, TRDizin)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 31 Sayı: 6
• Basım Tarihi: 2020
• Doi Numarası: 10.18400/tekderg.430536
• Dergi Adı: Teknik Dergi/Technical Journal of Turkish Chamber of Civil Engineers
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, TR DİZİN (ULAKBİM)
• Sayfa Sayıları: ss.10315-10337
• Anahtar Kelimeler: Chloride profiles, Corrosion, Corrosion rate, Cracked concrete, Diffusion coefficient, Fibers, Sustained crack width, Sustained flexure
• Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
• Boğaziçi Üniversitesi Adresli: Evet

Özet

This research discusses the chloride diffusivity of concrete as well as corrosion performance of rebars in cracked and uncracked states. Prismatic concrete specimens with two water-to-cement ratios, two concrete cover thicknesses with and without steel fibers were used. Three-point flexural loading was applied to form cracks and cracks were sustained by a bolt system. Half-cell potential and corrosion rate measurements were carried out following wetting - drying cycles in chloride environment which were continued for 80 weeks. The positive effects of lower water-to-cement ratio and greater cover depth were found to be surpassed by existence of cracks in concrete.