Details

Autor(en) / Beteiligte

• Attia, Mohammed M.
• Abdelsalam, Bassam Abdelsalam
• Eita, M. A.
• Ahmed, Mizan
• Liang, Qing Quan
• Rageh, Basem O.

Titel

Tests and finite element modeling of concrete beams reinforced with reused steel bars

Ist Teil von

• Structural concrete : journal of the FIB, 2024-02, Vol.25 (1), p.137-153

Ort / Verlag

Weinheim: WILEY‐VCH Verlag GmbH & Co. KGaA

Erscheinungsjahr

2024

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• This paper presents the experimental study and finite element modeling of the flexural behavior of concrete beams reinforced with reused steel bars as longitudinal reinforcements. The experimental program and results of eight reinforced concrete (RC) beams constructed with and without reused steel bars are described in detail. The replacement percentages of brand‐new bars with reused steel bars in the tested beams were 50% and 100%. The reused steel bars were coated with and without epoxy. Steel fibers with fractions of 0.5% and 1.0% of the concrete volume were added to the concrete mixes. The load‐deflection relationship, ductility index, toughness, and failure modes of the tested beams are presented and discussed. It is shown that utilizing reused steel bars decreases the ultimate load of RC beams but increases their deflection at the ultimate load compared with the control beam. Increasing the steel fiber ratio increases the ultimate load and the deflection at the ultimate load of RC beams incorporating reused steel bars. However, the zinc‐rich epoxy used to coat the reused steel bars does not affect the behavior of the beams. Three‐dimensional nonlinear finite element (FE) models of the tested beams were developed using ABAQUS and validated against the test results. The developed FE models are capable of accurately simulating the experimentally observed behavior of RC beams with reused steel bars.