Bond slip behavior of anchored CFRP strips on concrete surfaces

Mertoglu C., ANIL Ö., Durucan C.

CONSTRUCTION AND BUILDING MATERIALS, cilt.123, ss.553-564, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 123
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.conbuildmat.2016.07.060
  • Dergi Adı: CONSTRUCTION AND BUILDING MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.553-564
  • Anahtar Kelimeler: Bond-slip model, Strain distribution, CFRP, Anchorage, STRENGTHENED RC BEAMS, FRP, MODELS, PLATES, BARS
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, strain distributions and the bond slip behaviors at the carbon fiber reinforced polymer (CFRP) strips and reinforced concrete interface were investigated. 14 concrete specimens with externally bonded CFRP strips were tested. Main variables considered in the experimental study were width of the CFRP strips, bond length of CFRP strips and the number of anchorages. The test results obtained from the experimental study are comparatively presented in terms of strain distributions on CFRP strips with anchorages, stress - displacement behaviors, initial stiffnesses, energy dissipation capacities of test specimens. From the test results it is observed that using anchorages is very effective in terms of ultimate load capacity, strain distribution and energy dissipation capacity. The results of the experimental study are compared with analytical results obtained from several bond strength models available in the literature. A bond slip model was proposed based on the results of the conducted tests. It was observed that bond stress of the CFRP strips increased with increasing number of anchorages. (C) 2016 Elsevier Ltd. All rights reserved.