Flexural behavior of reinforced concrete beams under instantaneous loading: Effects of recycled ceramic as cement and aggregates replacement

• Main Authors: Samadi, Mostafa, Baghban, Mohammad Hajmohammadian, Kubba, Ziyad, Faridmehr, Iman, Nor Hasanah, Abdul Shukor Lim, Benjeddou, Omrane, Nur Farhayu, Ariffin, Huseien, Ghasan Fahim
• Format: Article
• Language: English
• Published: MDPI 2022
• Subjects: T Technology (General); TA Engineering (General). Civil engineering (General); TP Chemical technology
• Online Access: http://umpir.ump.edu.my/id/eprint/34668/1/Flexural%20behavior%20of%20reinforced%20concrete%20beams%20under%20instantaneous%20loading.pdf; http://umpir.ump.edu.my/id/eprint/34668/; https://doi.org/10.3390/buildings12040439; https://doi.org/10.3390/buildings12040439

The flexural behavior of five reinforced concrete beams containing recycled ceramic as cement and aggregate replacement subjected to a monotonic static load up to failure was studied. A full-scale, four-point load test was conducted on these beams for 28 days. The experimental results were compared with the conventional concrete as a control specimen. The cross-section and effective span of these beams were (160 × 200 mm) and 2200 mm, respectively. The data recorded during the tests were the ultimate load at failure, steel-reinforcement bar strain, the strain of concrete, cracking history, and mode of failure. The beam containing 100% recycled aggregates displayed an ultimate load of up to 99% of the control beam specimen. In addition, the first crack load was almost similar for both specimens (about 14 kN). The deflection of the beam composed of 100% of the recycled aggregates was reduced by 43% compared to the control specimen. Regardless of the recycled ceramic aggregates ratio, quantities such as service, yield, and ultimate load of the proposed beams exhibited a comparable trend. It was asserted that the ceramic wastes might be of potential use in producing high-performance concrete needed by the structural industry. It might be an effective strategy to decrease the pressure on the environment, thus reducing the amount of natural resources usage.