Definition of mode-I fracture behaviour of plain and fiber reinforced various grades of concretes by digital image analysis

GÜMÜŞ M., ARSLAN A., Kalkan H.

MECHANICS OF ADVANCED MATERIALS AND STRUCTURES, cilt.31, sa.16, ss.3725-3739, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 16
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1080/15376494.2023.2183290
  • Dergi Adı: MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.3725-3739
  • Anahtar Kelimeler: CMOD, digital image correlation, effective crack length, notched beam, peak load fracture energy, Steel fiber, unstable fracture toughness
  • Gazi Üniversitesi Adresli: Evet

Özet

In this study, the fracture behavior of notched concrete beams produced with concrete strength from 25 to 100 MPa and steel fiber volume ratio from 0 to 1.5% were experimentally investigated under three-point loading. The digital image correlation method was adopted to determine the full-field deformation map on the beam surface. Test results were evaluated concerning vertical deflection versus CMOD, peak load fracture energy, effective crack length and unstable fracture toughness. Based on the characteristic length of specimen, an empirical relation was developed for the estimation of effective crack length, which yielded results close to those of two parameter model.