AP25794995 – Hybrid fibers for improving the properties of hstrength concrete: effect of steel and synthetic fibers on crack resistance and ductility
Objective of the project – The project is to develop high-strength concrete with hybrid fibers, providing improved resistance to seismic loads. This concrete will have high strength, crack resistance and durability, which is important for structures exposed to seismic impacts and extreme climatic conditions of Kazakhstan.
Relevance: The relevance of this study is driven by the need to improve the reliability and durability of construction materials in seismically active regions of Kazakhstan. Conventional concrete materials have insufficient crack resistance and ductility, limiting their performance under extreme conditions. Therefore, the use of hybrid fibers to enhance concrete properties is of significant importance. This approach enables improved strength and resistance of structures to external impacts. The research outcomes will contribute to the advancement of innovative technologies in the construction industry.
Scientific supervisor: PhD, Erlan Yergaliuly Khamza.
Expected and achieved results: Within the project, an effective methodology for optimizing high-strength concrete compositions with hybrid fibers will be developed. Using a three-factor mathematical model, optimal compositions with improved strength, crack resistance, and flexural properties will be identified. During the study, 10 base and 30 optimized concrete mixtures were prepared, allowing for the evaluation of the influence of steel, polypropylene, and basalt fiber combinations. The results confirmed a significant synergistic effect of hybrid reinforcement, improving the mechanical and deformation properties of the material. Additionally, the role of the fractal structure of concrete in crack formation and stress distribution was identified. The findings provide a basis for the industrial implementation of the developed material. Overall, the research contributes to improving the reliability and durability of structures in seismically active regions.
List of publications with links to them
- Nurlybayev R.E., Kuldeyev E.I., Yestemessova A.S., Altayeva Z.N., Orynbekov Y.S., Murzagulova A.A., Iskakov A.A., Abisheva G.K., Khamza Y.Y. Thermal Insulation Dry Construction Mixture Based on Diatomite Coatings. – 2025. – Vol. 15. – Article 811. DOI: https://doi.org/10.3390/coatings15070811