PSI - Issue 70

R. Ashwathi et al. / Procedia Structural Integrity 70 (2025) 183–190

189

Fig. 4. Ultrasonic Pulse Velocity Test

The existence of fibres in hybrid mix enhances homogeneity and integrity of the structural performance and is reflected by the higher values of UPV values. The lower value of UPV indicates the incidence of voids and cracks in the structure. The fibres in the matrix improves the interfacial connection between the cement and aggregate and maintains the correlation between shrinkage and integrity. 4. Conclusion: The research conducted by incorporating fibres at various percentage of fibres provides insights into the effect of percentage of fibres on strength and durability properties. The spotlights of research are as follows: The highest strength gain of compressive strength was obtained as 17.22%, Split tensile strength as 32%, Flexural strength as 70.23% and 19.39% in the UPV test to that of conventional one. This enhancement provides way towards homogeneity and resistance to the environmental degradation. These findings validate the potential of hybrid fibre reinforced concrete for various applications by offering strength and durability. Based on the conclusion, the following are the possible future scope to analyse it more precise:  Life-cycle cost analyses could be conducted to evaluate the long-term economic viability of HFRC.  Long-term durability needs to be investigated under various environmental conditions through accelerated aging tests, including freeze-thaw cycles, chemical exposure, and other relevant stressors.  The microstructural analysis could be incorporated to comprehend the rheological properties of FRC. Acknowledgements The authors declare that no funds, grants or other supports were received for the preparation of the manuscript. Ashwathi R had the idea for the article. The final draught of the manuscript has been read and approved by all contributors. All authors give consent for the publication. References Baldenebro-Lopez, F.J., 2014. Influence of continuous plastic fibers reinforcement arrangement in concrete strengthened. IOSR J. Eng. 4, 15–23. Brandt, A.M., 2008. Fibre reinforced cement-based (FRC) composites after over 40 years of development in building and civil engineering. Compos. Struct. 86, 3–9. Cao Mehran, M.K., 2020. Effectiveness of multiscale hybrid fiber reinforced cementitious composites under single degree of freedom hydraulic shaking table. Struct. Concr. 22, 535–549. Cheung, J., Roberts, L., Liu, J., 2018. Admixtures and sustainability 114 (2018) 79–89. de la Cruz, J., Segura, I., Pujadas, P., Torrents, J.M., de la Fuente, A., 2022. Non-destructive test approach for assessing the amount of fibre in polymeric fibre reinforced concrete. Constr. Build. Mater. 317, 125964.