## 5 Conclusions  
The current research deals with the experimental evaluation of the bond and flexure behavior of reinforced recycled aggregate concrete prepared using RBAs and RCAs. The following conclusions can be drawn from the findings of this study:  
1. The reduction in both compressive and bond strengths was observed with the increase in the content of coarse RAs in the mix composition. However, with a 50% replacement of NAs by RAs, the decrease in properties was insignificant. This highlights the potential of incorporating recycled materials into concrete mixes as a viable option for achieving satisfactory strength levels. 2. Among all tested specimens, the experimentally measured bond strengths exceeded the design values predicted using the empirical model proposed by ACI 318, indicating favorable bonding performance. Notably, while comparing specimens containing coarse RCAs to those prepared with coarse RBAs with the addition of any fine aggregate (RCA or RBA), a slightly higher bond strength was observed in the former. 3. The cracking and yielding stiffness of the beams show improvement for the specimens prepared with a higher content of coarse NAs. These findings highlight the influence of NAs on the stiffness characteristics of the beams, indicating that increasing the quantity of NAs can enhance the structural performance and load-bearing capacity of the concrete elements. However, the specimen containing 50% recycled coarse aggregates also showed comparable performance to the controlled specimen. 4. In the case of beams containing recycled coarse aggregates, an expanded pattern with a greater number of cracks was observed. On the other hand, beams with natural coarse aggregate and controlled specimens exhibited a squeezed pattern with fewer cracks. This disparity in crack patterns suggests that the use of recycled coarse aggregates can lead to increased cracking and a more dispersed distribution of cracks compared to beams with natural coarse aggregate. However, with the partial replacement of NAs by RAs, less damage was observed for the specimens in the presence of a higher content of NAs. This study finally concludes that the flexural response of RC beams containing 100% fine recycled brick aggregates or fine recycled concrete aggregate is similar to the control RC beam; however, it is inferior to the control RC beam when natural coarse aggregates are fully replaced with coarse recycled brick aggregates. To maximize the use of coarse recycled aggregates in RC beams without compromising the strength, a hybrid form of recycled concrete and brick aggregates (75:25) has been found to be a good option. This study mainly focused on the behavior of RC beams made using concrete containing RCAs and RBAs. The authors recommend carrying out future research studies on the behavior of RC columns constructed using similar concrete mixes. Further, experimental investigation to study the impact of suitable treatment methods on the properties of RBAs for their structural applications is also recommended to be carried out in future research. **Author Contributions**: Conceptualization, R.H. and S.A.; Formal analysis, S.M.S.K. and M.J.M. ; Funding acquisition, A.B., S.A., M.S.K., S.S., S.M.S.K. and M.J.M. ; Investigation, R.H., S.A. and M.S.K. ; Methodology, A.B., R.H., S.A., M.S.K. and S.S.; Project administration, R.H. and S.A.; Resources, A.B., R.H., S.A., S.M.S.K. and M.J.M. ; Supervision, R.H.; Writing--original draft, A.B., R.H., S.A. and S.M.S.K. ; Writing--review and editing, S.M.S.K. and M.J.M. All authors have read and agreed to the published version of the manuscript. **Funding:** Higher Education Commission (HEC) of Pakistan under HEC-NRPU Project No. 9764. **Institutional Review Board Statement**: Not applicable. **Informed Consent Statement**: Not applicable. **Data Availability Statement**: The original contributions presented in the study are included in the article, further inquiries can be directed to the corresponding author.