Corrosion and chloride diffusivity of reinforced concrete cracked under sustained flexure

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Özyurt N., Söylev T. A., Özturan T., Pehlivan A. O., Niş A.

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

  • 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
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

© 2020 Turkish Chamber of Civil Engineers. All rights reserved.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.