Modeling of Tensile Stress-Strain Response for Steel Fiber Reinforced Self-Compacting Concretes


NİŞ A., ÖZYURT ZİHNİOĞLU N., ÖZTURAN T.

Journal of Sustainable Construction Materials and Technologies, cilt.11, sa.2, ss.289-304, 2026 (Scopus, TRDizin) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 2
  • Basım Tarihi: 2026
  • Doi Numarası: 10.29187/2458-973x.1222
  • Dergi Adı: Journal of Sustainable Construction Materials and Technologies
  • Derginin Tarandığı İndeksler: Scopus, Directory of Open Access Journals, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.289-304
  • Anahtar Kelimeler: Fiber reinforced materials, Flexural modeling, Hybrid fibers, Multi layer model, SCC
  • İstanbul Gelişim Üniversitesi Adresli: Evet

Özet

Main aim of the research was to further understand self-compacting concrete reinforced with steel fibers (SFR-SCC) behavior and to contribute modeling of the tensile stress-strain diagrams for the standardization of the fiber reinforced materials for structural utilization. Fiber reinforced materials has not been used without structural rebar because of the absence of stress-strain curve in tension required for the structural design codes. Hence, an inverse analysis (multi-layer model) was further modified for various steel fibers to predict tensile stress-strain behaviour. For this purpose, 5 different mixes; control, reinforced with long fibers with 0.5% and 1%, short fiber with 0.5% and hybrid fiber with 1% fiber volume were produced. Fresh state tests were realized to examine flow capability of the mixes. For the input parameters, force and displacement controlled compressive strength tests and splitting tensile strength tests were realized on the SFR-SCC specimens. Three-point flexural strength tests on notched beams were realized to check experimental results with the model simulation results. The results showed that previous models were applicable for long fibrous specimens; however, further improvements were required for long FRC specimens. For the short and hybrid FRC samples, novel parameters were successfully proposed and utilized in this study.