PSI - Issue 70

V. Preethi et al. / Procedia Structural Integrity 70 (2025) 271–278

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uniform fiber dispersion, leading to agglomeration, which reduces the composite efficiency of fiber reinforcement. The 3D surface plot confirms the existence of an optimal interaction zone where the combined influence of moderate fiber geometry and higher cement content maximizes performance. 4. Conclusions 1. Cement content was found to have a pronounced influence on enhancing the flexural, split tensile and compressive strengths of concrete, confirming its primary role in mechanical performance. 2. The aspect ratio of fibers significantly affected split tensile and flexural strength, with optimal values contributing to improved crack-bridging behaviour and load transfer. 3. Glass fiber content had a positive effect on the mechanical strength up to an optimal percentage, beyond which it limits due to possible fiber agglomeration. 4. The fiber aspect ratio and cement content had the most significant impact on the strength parameters compared to other parameters considered in the study. 5. Water content showed an inverse relationship with compressive strength, highlighting the importance of water control in achieving dense and durable concrete matrices. 6. RSM-based analysis revealed that simultaneous optimization of cement content, fiber characteristics, and water content is essential to achieving superior mechanical performance in fiber-reinforced concrete. Acknowledgements The authors are thankful to the Civil Engineering Department, Chaitanya Bharathi Institute of Technology, Hyd. References Ayub, T., Shafiq, N. and Nuruddin, M.F., 2014. Effect of chopped basalt fibers on the mechanical properties and microstructure of high performance fiber reinforced concrete. Advances in Materials Science and Engineering, 2014(1), p.587686. Belaadi, A., Boumaaza, M., Alshahrani, H. and Bourchak, M., 2023. Optimization of palm rachis biochar waste content and temperature effects on predicting bio-mortar: ANN and RSM modelling. Journal of Natural Fibers, 20(1), p.2151547. Dayalan, J., 2017. A Study on Strength Characteristics of Glass Fibre Reinforced High Performance-Concrete. International Research Journal of Engineering and Technology (IRJET), 4(2), pp.353-357. Deshmukh, S.H., Bhusari, J.P. and Zende, A.M., 2012. Effect of glass fibers on ordinary Portland cement concrete. IOSR journal of engineering, 2(6), pp.1308-1312. Hemalatha, S. and Rose, A.L., 2016. An experimental study on Glass fiber reinforced concrete. Int. Res. J. Eng. Technol, 3, pp.2285-2289. Hilles, M.M. and Ziara, M.M., 2019. Mechanical behavior of high strength concrete reinforced with glass fiber. Engineering Science and Technology, an International Journal, 22(3), pp.920-928. Jiang, C., Fan, K., Wu, F. and Chen, D., 2014. Experimental study on the mechanical properties and microstructure of chopped basalt fibre reinforced concrete. Materials & Design, 58, pp.187-193. Khan, M. and Ali, M., 2016. Use of glass and nylon fibers in concrete for controlling early age micro cracking in bridge decks. Construction and Building Materials, 125, pp.800-808. Krishnamurthy, B.S., Balamuralikrishnan, R. and Shakil, M., 2017. An experimental work on alkaline resistance glass fiber reinforced concrete. International Journal of Advanced Engineering, Management and Science, 3(7), pp.730-737. Lv, Y., 2014. Experiment investigation on mechanical property of glass fiber reinforced concrete. Advanced Materials Research, 915, pp.784 787. Muñoz Pérez, S.P., Santisteban Purizaca, J.F., Castillo Matute, S.M., García Chumacero, J.M., Sánchez Diaz, E., Diaz Ortiz, E.A., Rodriguez Laffite, E.D., Quispe Osorio, J.L. and Briceño Mendoza, Y.M., 2024. Glass fiber reinforced concrete: overview of mechanical and microstructural analysis. Innovative Infrastructure Solutions, 9(4), p.116. Ofuyatan, O.M., Agbawhe, O.B., Omole, D.O., Igwegbe, C.A. and Ighalo, J.O., 2022. RSM and ANN modelling of the mechanical properties of self-compacting concrete with silica fume and plastic waste as partial constituent replacement. Cleaner Materials, 4, p.100065. Rosas, M.H., Chileno, N.G.C., Campos, A.A. and Rocha, J.H.A., 2023. Analysis of concrete mechanical properties when adding type-E glass fibers. Journal of Building Pathology and Rehabilitation, 8(1), p.40. Srikrishna, T.C., Noolu, V., Sudheer Kumar Reddy, B., Alaneme, G.U., Prasad, R.D. and VishnuPriyan, M., 2025. Investigations on mechanical and stress strain characteristics of geopolymer concrete reinforced with glass fibers. Scientific Reports, 15(1), p.6335. Srinivasa, P.R., Pannirselvam, N. and Sekhar, T., 2010. Strength properties of glass fibre concrete. APRN journal, 5(4).