• A. Batrakova Kharkiv National Automobile and Highway University
  • H. Sarkisian Kharkiv National Automobile and Highway University
  • E. Zakharova Kharkiv National Automobile and Highway University


non-rigid pavement, road roughness, roughness forecasting, general modulus of elasticity.


To ensure safe, comfortable driving at high speeds, a strong, even surface is required for the entire life of the pavement. In this regard, the issue of predicting changes in the equality of coverage over time is very important. The article considers the peculiarities of changing the longitudinal equality of the road surface. Purpose is to improve the model of forecasting the equality of non-rigid pavement. Methods – analytical and experimental.

The analysis of existing decisions on the issue of forecasting the equality of coverage is performed. The most important factors influencing the change in the equality of road coverage have been identified. Based on the analysis of theoretical models and a number of experimental data, an improved model for predicting the equality of coverage of non-rigid pavement is proposed. MathCAD and MS Excel were involved in the development of an improved model that takes into account the most important factors. The model of change of coverage roughness, where increase in the roughness index over time is considered as a function of such parameters, is improved: the modulus of pavement elasticity (actual or required); the number of load cycles for t years of pavement operation; the share of trucks in the traffic flow; the factor of safety margin of the pavement structure. The adequacy of the developed model of changing the roughness of coverage is confirmed by statistical processing of experimental data obtained by the thesis author and other researchers on public roads with different service life, and calculated data under the theoretical model. The Pearson correlation coefficient between experimental and calculated data is more than 0.95, which indicates the adequacy of the developed model.

Compared to the well-known models of forecasting coverage roughness, the improved model allows to apply a wider range of values of the general equivalent modulus of elasticity of pavement design (from 100 MPa to 600 MPa) and to receive forecast values of roughness for service life of non-rigid pavement over 5 years.

Author Biographies

A. Batrakova, Kharkiv National Automobile and Highway University

Doctor of Technical Sciences, Professor of the Department

H. Sarkisian, Kharkiv National Automobile and Highway University

PhD, Associate Professor of the Department

E. Zakharova, Kharkiv National Automobile and Highway University

Assistant of the Department


1. Byrulia O.K. (1966). Operation of highways. Kharkiv, 324.
2. Demyshkan V.F. (2000). Improving the management of roads in conditions of limited resources. Kharkiv, 17.
3. Skorobohatchenko D.A. (2018). Forecasting of equality of a covering of highways taking into account weather and climatic influence and level of works on the maintenance. PNIPU newspaper. Construction and architecture, 9, № 2, 98-109.
4. Zolotar Y.A. (1999). To determine the residual deformations in road structures with repeated dynamic effects on them of mobile vehicles. Saint Petersburg, 31.
5. Kalenova E.V. (2009). Improving the calculation method in the design of non-rigid pavements with asphalt pavements. Moscow, 281.
6. Krasykov O.A. (2016). New mathematical models for predicting the evenness of road surfaces. Roads and bridges. Moscow: Russian Road Research Institute, 35 (1), 138-160.
7. Zhabyn V.Y., Melnytskyi M.A., Herasymov O.V. (2013). Empirical evaluation of the strength characteristics of oil and gravel pavements of roads. Forest log, 3, 79-85.
8. Burtul Yu.V., Leonovich I.I. (2011). Interdependence of evenness of a covering and durability of road clothes. Proceedings of BSTU. Minsk: BSTU, 2 (140), 86-92.
9. Liubchenko A.S. (2010). Estimation and forecasting of reliability of road clothes of not rigid type (on the basis of short-term supervision). Volgograd, 146.
10. Kraiushkyna K. (2013). Influence of properties of asphalt concrete coverings with slag materials on transport and operational indicators of highways. Vilnius, 220.
11. Uhlova E.V. (2009). Fatigue durability of the operated asphalt concrete coverings. Rostov-on-Don, 244.
12. ODM 218.2.096-2018. (2017). Methodical recommendations for taking into account the influence of traffic flow parameters on the rate of development of damage to pavements (based on the monitoring of the federal highway M-6 "Caspian"). Moscow: Federal Road Agency (Rosavtodor), 29.
13. Kizima S.S. (1975). Research change of equality of not rigid road clothes in the conditions of the USSR as an indicator of their quality. Kiev: Kiev National Automobile and Road University, 249.



How to Cite

Batrakova, A., Sarkisian, H., & Zakharova, E. (2021). IMPROVEMENT OF THE ROUGHNESS FORECASTING MODEL OF COATING OF NON-RIGID ROAD PAVEMENT COATING: Array. Municipal Economy of Cities, 4(164), 71–76. Retrieved from

Most read articles by the same author(s)