Abstract:
The main purpose of this article is to analyze the operational condition of existing cement-concrete roads in the Republic of Uzbekistan and identify work to eliminate existing problems. According to this, defects in cement concrete pavements, using the method of visual examination of the condition proposed by British specialists, are the objects of study of the section of the A-380 “Guzor-Bukhara-Nukus-Beynov” highway (480-490 km) and section of the M-39 “Almaty-Bishkek-Tashkent-Shakhrisabz-Termiz” highway (1173-1184 km). Based on the results, coating surface defects and structural defects were classified, and the causes and consequences of their occurrence were analyzed. The importance of improving storage technologies in eliminating problems caused by defects in cement concrete pavements is emphasized, and through this, issues of increasing the service life of coatings are considered. At the same time, recommendations were made on continuous monitoring of the condition of the roads in use, organization, and planning of operational works based on the results of the study of the pavement condition.
Highlights:
- Analysis of Road Conditions: Evaluating defects in Uzbekistan’s cement-concrete highways.
- Causes and Solutions: Identifying defects, their causes, and solutions for longevity.
- Recommendations: Continuous monitoring, improved storage, and operational planning for
Keywords - cement concrete, service life, surface defects, structural defects, Visual condition surveys (VCS).
References
KazdorNII, Album-Catalog of New Technology and Materials Used in the Automotive Industry in the Republic of Kazakhstan, pp. 19–26, 2017.
M. Ambrose, P. Edwards, and D. Burton, Concrete Pavement Maintenance Manual, Highways England, pp. 82–96, 2021.
M. T. Ley, B. W. Russell, and R. N. Emerson, "Temperature Effects on Concrete Pavements in Oklahoma," Stillwater, pp. 20–27, 2013.
T. J. Amirov, Construction of Cement Concrete Pavements of Highways and Airfields, Sano-Standard, pp. 210–215, 2017.
A. Urakov, D. Tashev, Z. Xametov, and R. Soataliev, "Road Maintenance and Climate Zoning of the Territory of the Republic of Uzbekistan," in International Scientific Siberian Transport Forum TransSiberia, vol. 402, A. Manakov and A. Edigarian, Eds., Springer, Cham, 2022. [Online]. Available: https://doi.org/10.1007/978-3-030-96380-4_133
A. X. Urakov and R. R. Soataliyev, "Analysis of Modern and Resource-Efficient Technologies Used in the Assessment of Transport and Operational Indicators of Automobile Roads," The Scientific Journal of Vehicles and Roads, no. 3, pp. 6–11, 2021.
A. X. Urakov and X. D. Urolova, "Increasing the Service Life of Cement Concrete Roads by Improving Maintenance Technologies," Academic Research in Educational Sciences, vol. 4, no. 5, pp. 141–149, 2023.
V. Ushakov, D. Jelagin, G. Dyakov, S. Dmitriev, and M. Goryachev, "Field Evaluation of Rutting in Concrete Pavements," IOP Conference Series: Materials Science and Engineering, vol. 832, no. 1, p. 012033, 2020. [Online]. Available: https://doi.org/10.1088/1757-899X/832/1/012033
V. V. Ushakov and V. A. Maksimov, "Substantiation of the Technology of Maintenance of Cement-Concrete Road Coverings to Increase Their Service Life," Avtomobile. Road. Infrastructure, vol. 2, no. 35, pp. 105–112, 2022.
President of the Republic of Uzbekistan, "Decree No. 249: On Measures to Expand the Network of Cement Concrete Roads," 2022. [Online]. Available: https://lex.uz/
X. D. Urolova, Improving the Operation of Cement Concrete Roads, 2023.
A. X. Urakov and X. D. Urolova, "The Main Causes of Cracks in Cement Concrete Pavements and Their Elimination," Universum: Technical Sciences, vol. 2, no. 119, pp. 4–8, 2024. [Online]. Available: https://doi.org/10.32743/UniTech.2024.119.2.16871
M. K. Pshembaev, V. V. Girinsky, Y. N. Kovalev, V. N. Yaglov, and S. S. Budnichenko, "Porous Structure of Road Concrete," Nauka i Tekhnika [Science and Technique], vol. 15, no. 4, pp. 298–307, 2016. [Online]. Available: https://doi.org/10.21122/2227-1031-2016-15-4-298-307
M. K. Pshembaev, Y. N. Kovalev, and L. I. Shevchuk, "Stresses in Cement-Concrete Pavement Surfacing Caused by Thermal Shock," Nauka i Tekhnika [Science and Technique], vol. 15, no. 2, pp. 87–94, 2016. [Online]. Available: https://doi.org/10.21122/2227-1031-2016-15-2-87-94
M. K. Pshembaev, Y. N. Kovalev, and L. I. Shevchuk, "Analysis of Stress State in Upper Layer of Road Concrete Pavement with Temperature Action," Nauka i Tekhnika [Science and Technique], vol. 16, no. 4, pp. 282–288, 2017. [Online]. Available: https://doi.org/10.21122/2227-1031-2017-16-4-282-288
I. Gschwendt and A. Zuzulová, "The Temperature Regime of Cement Concrete Pavements," in Proceedings of the Ivan Poliaček Seminar - The Influence of Climate Condition on Road Construction, Bratislava, Slovakia, pp. 126–132, Nov. 20–21, 2008.
S. Kim, H. Ceylan, and K. Gopalakrishnan, "Finite Element Modelling of Environmental Effects on Rigid Pavement Deformation," Structural and Civil Engineering Journal, vol. 8, no. 2, pp. 101–114, 2017.
H. Ying, W. Tian, H. Dong, and J. Li, "Research on Crack Classification Method of Cement Concrete Pavement," in 6th Annual International Workshop on Materials Science and Engineering, 2020. [Online]. Available: https://doi.org/10.1088/1742-6596/1622/1/012120
O. Ya. Berg, Physical Fundamentals for Concrete and Reinforced Concrete Strength Theory, Gosstroyizdat, Moscow, 1996.
O. Ya. Berg, "Some Physical Substantiations on Concrete Strength Theory," in Theory for Calculation and Design of Reinforced Concrete Constructions, Gosstroyizdat, Moscow, pp. 14–22, 1996.