ENHANCING DYNAMIC IMPACT MECHANICAL PROPERTIES OF ULTRA-HIGH-PERFORMANCE CONCRETE WITH STEEL FIBER REINFORCEMENT

Authors

Oybek Valijonovich Tuyboyov, Ministry of Higher Education, Science and Innovation of the Republic of Uzbekistan, PhD, Associate Professor, oybektuyboyov85@gmail.com, https://orcid.org/0000-0002-4153-0521;Follow
Sultonmurod Bekpulatovich Normatov, Tashkent State Technical University named after Islam Karimov, Tashkent city, Republic of Uzbekistan, sultonmurodnormatov678@gmail.com, https://orcid.org/0009-0001-8263-2620.Follow

Abstract

This study investigates the dynamic impact mechanical properties of Ultra-High-Performance Concrete (UHPC) with high-content and directional reinforced steel fiber. The research explores the influence of directional distributed steel fiber on the dynamic impact properties of UHPC specimens prepared with varying fiber contents. Through experimental analysis using the split-Hopkinson pressure bar (SHPB) method, stress-strain curves, stress peaks, dynamic increase factor (DIF), and ductile energy absorption properties of the specimens at different strain rates were obtained. The results demonstrate that oriented steel fiber significantly enhances the dynamic properties of UHPC, with notable improvements in peak strain, peak stress, and energy absorption capacity. The study reveals that increasing fiber content leads to enhanced peak stress, energy absorption, and multiple-impact compression resistance of the specimens. Overall, the findings highlight the effectiveness of directional reinforced steel fiber in improving the dynamic impact performance of UHPC.

First Page

67

Last Page

72

References

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Recommended Citation

Tuyboyov, Oybek Valijonovich and Normatov, Sultonmurod Bekpulatovich (2024) "ENHANCING DYNAMIC IMPACT MECHANICAL PROPERTIES OF ULTRA-HIGH-PERFORMANCE CONCRETE WITH STEEL FIBER REINFORCEMENT," Technical science and innovation: Vol. 2024: Iss. 4, Article 12.
DOI: https://doi.org/10.59048/2181-1180.1574
Available at: https://btstu.researchcommons.org/journal/vol2024/iss4/12