Title: An experimental and analytical study of the effect of mechanical properties of Syrian recycled aggregates on torsional behaviour of RC beams

Authors: Falah Mubarak; Ihssan Tarsha; Muneeb Al-Allaf

Addresses: Department of Structural Engineering, Faculty of Civil Engineering, Al-Baath University, Homs, Syria ' Department of Structural Engineering, Faculty of Civil Engineering, Al-Baath University, Homs, Syria ' Department of Structural Engineering, Faculty of Civil Engineering, Al-Baath University, Homs, Syria

Abstract: In this research, an experimental and analytical study was carried out to understand the behaviour of reinforced concrete beams subjected to torsion with full and partial replacement ratios (0%, 25%, 50%, 75%, and 100%). The current study revealed that the mechanical properties of concrete had been affected by increasing the ratio of the recycled aggregates. The results showed that increasing the ratio of recycled aggregate led to a decrease in compressive strength, modulus of elasticity, and split tensile strength compared to the reference sample consisting of natural aggregate (R0). The experimental study was also conducted by applying a torsional moment on RC beams, made with natural and recycled aggregates, the results showed that the torsional torque decreases by (8.9%-13.1%-20.4%-26.7%) according to the groups (R25-R50-R75-R100) respectively compared to the reference group (R0). The FE results showed acceptable agreement with the experimental results in terms of values, shape, and distribution of cracks.

Keywords: recycled aggregates; compression strength; reinforced concrete beams; torsional moment; finite element method; FEM.

DOI: 10.1504/IJMRI.2024.141668

International Journal of Masonry Research and Innovation, 2024 Vol.9 No.5/6, pp.665 - 683

Received: 11 Sep 2023
Accepted: 29 Sep 2023
Published online: 30 Sep 2024 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article