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Comparative investigation on effect of fibers in the flexural response of post tensioned beam

  • R. Shanthi VengadeshwariEmail author
  • H. N. Jagannatha Reddy
Original Paper
  • 2 Downloads

Abstract

Post tensioning has been proved to be economical and efficient for long span bridges and flyovers. Further it has been established that in addition to prestressing, introduction of fibers arrests cracks and enhances ductility characteristics of concrete. From the literature, it is evident that research on the effect of fibers in post tensioned beams is limited. This paper presents a comparative investigation on the flexural behavior of post tensioned beams reinforced with optimum volume fractions of basalt and polypropylene fibers. The test parameter was the optimum volume fraction of basalt and polypropylene fibers. Peak load carrying capacity, Peak deflection, energy absorption and ductility factor were the structural aspects to be studied during the flexural behavior of fiber reinforced post tensioned beams. For both the fibers, a range of low volume fractions of concrete viz 0.25%, 0.5% and 0.75% were chosen and mechanical properties were studied. By comparative analysis, it was found that there was considerable improvement when polypropylene and basalt fibers were used in 0.25% volume fraction which had to be considered as optimum volume fraction. Post tensioned beams containing optimum volume fraction of fibers were cast and tested for flexural behavior. Beams reinforced with basalt fibers (BFRC) exhibited higher load carrying capacity then polypropylene fiber reinforced beams. Furthermore, all the fibred beams demonstrated enhancement in ductility and energy absorption, with highest values for the BFRC beams. By and large it can be concluded that basalt fibers proved to have higher structural efficiency than polypropylene fibers when used in the tested specimen.

Keywords

Post tensioned beam Basalt fibers Polypropylene fibers Optimum volume fraction Flexural behavior Crack pattern Ductility Energy absorption 

Notes

Acknowledgements

Authors would like to thank Mr. Sheetal Kumar, Mr. Vikas Naik and Ms. Bhavana for their constant support throughout the Experimental Program.

Compliance with ethical standards

Conflict of interest

On behalf of the authors, R. Shanthi Vengadeshwari, the corresponding author states that there is no conflict of interest.

References

  1. Abbas, S., Soliman, A. M., & Nehdi, M. L. (2015). Exploring mechanical and durability properties of ultra-high performance concrete incorporating various steel fiber lengths and dosages. Construction and Building Materials, 75, 29–441.CrossRefGoogle Scholar
  2. Abdulhadi, M. (2014a). A comparative study of basalt and polypropylene fibers reinforced concrete on compressive and tensile behavior. International Journal of Engineering Trends and Technology, 9(6), 295–300.CrossRefGoogle Scholar
  3. Abdulhadi, M. (2014b). A comparative study of basalt and polypropylene fibers reinforced concrete on compressive and tensile behavior. International Journal of Engineering Trends and Technology, 9(6), 295–300.CrossRefGoogle Scholar
  4. Archbold, P & Ana Caroline da Costa Santos, A.L. (2016). The influence of basalt fibres on the mechanical properties of concrete. Research Gate, No. August. https://www.researchgate.net/publication/308335002.
  5. Ayub, T., Shafiq, N., & 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.  https://doi.org/10.1155/2014/587686.Google Scholar
  6. Dancygier, A. N., & Savir, Z. (2006). Flexural behavior of HSFRC with low reinforcement ratios. Engineering Structures, 28(11), 1503–1512.  https://doi.org/10.1016/j.engstruct.2006.02.005.CrossRefGoogle Scholar
  7. Ding, Y., You, Z., & Jalali, S. (2010). Hybrid fiber influence on strength and toughness of RC beams. Composite Structures, 92(9), 2083–2089.  https://doi.org/10.1016/j.compstruct.2009.10.016.CrossRefGoogle Scholar
  8. di Prisco, M., & Dozio, D., Post-tensioned SFRC beams, Department of Structural Engineering, Politecnico di Milano, Italy, vol. 1, pp. 1–10.Google Scholar
  9. Elsharkawy, H. A., Elafandy, T., EL-Ghandour, A. W., & Abdelrahman, A. A. (2013). Behavior of post-tensioned fiber concrete beams. HBRC Journal, 9(3), 216–226.  https://doi.org/10.1016/j.hbrcj.2013.08.006.CrossRefGoogle Scholar
  10. Guo, Q. Y., Mao, J. Z., & Han, S. M. (2015). Influence of reinforcement ratio on flexural behavior of prestressed UHPCC beam. Materials Science Forum, 813, 188–193.  https://doi.org/10.4028/www.scientific.net/MSF.813.188.CrossRefGoogle Scholar
  11. Hussien, O. F., Elafandy, T. H. K., Abdelrahman, A. A., Abdel Baky, S. A., & Nasr, E. A. (2012). Behavior of bonded and unbonded prestressed normal and high strength concrete beams. HBRC Journal, 8(3), 239–251.  https://doi.org/10.1016/j.hbrcj.2012.10.008.CrossRefGoogle Scholar
  12. Iyer, P., Kenno, S., & Das, S. (2015). Mechanical properties of fiber-reinforced concrete made with basalt filament fibers. Journal of Materials in Civil Engineering.  https://doi.org/10.1061/(asce)mt.1943-5533.0001272.Google Scholar
  13. Jiang, C., Fan, K., Wu, F., & Chen, D. (2014). Experimental study on the mechanical properties and microstructure of chopped basalt fibre reinforced concrete. Materials & Design, 58, 187–193.  https://doi.org/10.1016/j.matdes.2014.01.056.CrossRefGoogle Scholar
  14. Júnior, S. F., & De Hanai, J. B. (1999). Prestressed fiber reinforced concrete beams with reduced ratios of shear reinforcement. Cement and Concrete Composites, 21, 213–221.  https://doi.org/10.1016/s0958-9465(98)00054-7.CrossRefGoogle Scholar
  15. Kizilkanat, A. B., Kabay, N., Akyüncü, V., Chowdhury, S., & Akça, A. H. (2015). Mechanical properties and fracture behavior of basalt and glass fiber reinforced concrete: An experimental study. Construction and Building Materials, 100, 218–224.  https://doi.org/10.1016/j.conbuildmat.2015.10.006.CrossRefGoogle Scholar
  16. Mansur, M. A., Ong, K. C. G., & Paramasivam, P. (1986). Shear strength of fibrous concrete beams without stirrups. Journal of Structural Engineering, 112(9), 2066–2079.  https://doi.org/10.1061/(asce)0733-9445(1986)112:9(2066).CrossRefGoogle Scholar
  17. Padmarajaiah, S., & Ramaswamy, A. (2002). A finite element assessment of flexural strength of prestressed concrete beams with fiber reinforcement. Cement & Concrete Composites, 24(2), 229–241.  https://doi.org/10.1016/s0958-9465(01)00040-3.CrossRefGoogle Scholar
  18. Parveen, A. S. (2013). Structural behavior of fibrous concrete using polypropylene fibers. International Journal of Modern Engineering Research, 3, 1279–1282.Google Scholar
  19. Patel, P. A., Desai, A. K., & Desai, J. A. (2013). Evaluation of engineering properties for polypropylene fiber reinforced concrete. International Journal of Advanced Engineering Technology, 3(1), 42–45.Google Scholar
  20. Patil, S., & Sangle, K. (2013). Flexural strength evaluation of prestressed concrete beams with partial replacement of cement by Metakaolin and Flyash. American International Journal of Research in Science, Technology, Engineering & Mathematics, 3(2), 187–194.Google Scholar
  21. Rao, G.A., Vijayanand, I., & Eligehausen, R. (2007). Studies on ductility of RC beams in flexure and size effect. In: Proceedings of the 6th International Conference on Fracture Mechanics of Concrete and Concrete Structures, vol. 2.Google Scholar
  22. Singh, H. (2014). Flexural modeling of steel fiber-reinforced concrete members : Analytical investigations. Practice Periodical on Structural Design and Construction.  https://doi.org/10.1061/(asce)sc.1943-5576.0000244.Google Scholar
  23. Söylev, T. A., & Özturan, T. (2014). Durability, physical and mechanical properties of fiber-reinforced concretes at low-volume fraction. Construction and Building Materials, 73, 67–75.  https://doi.org/10.1016/j.conbuildmat.2014.09.058.CrossRefGoogle Scholar
  24. Tadepalli, P. R., Dhonde, H. B., Mo, Y. L., & Hsu, T. T. C. (2015). Shear strength of prestressed steel fiber concrete I-beams. International Journal of Concrete Structures and Materials, 9(3), 267–281.  https://doi.org/10.1007/s40069-015-0109-4.CrossRefGoogle Scholar
  25. Yang, I. H., Joh, C., & Kim, B. S. (2010). Structural behavior of ultra high performance concrete beams subjected to bending. Engineering Structures, 32(11), 3478–3487.  https://doi.org/10.1016/j.engstruct.2010.07.017.CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Civil EngineeringDayananda Sagar College of EngineeringBengaluruIndia
  2. 2.Department of Civil EngineeringBangalore Institute of TechnologyBengaluruIndia

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