Substantiating the choice and optimizing the parameters for the technology of hot recycling of asphalt concrete road coating

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.203947

Keywords:

hot recycling, asphalt concrete, experimental and statistical modeling, stirring temperature, regenerating additive

Abstract

The method of expert assessments has been used to substantiate that the most significant factors that significantly influence the mechanism and kinetics of technological processes of the regenerated mixture preparation are the temperature of its preparation and the content of the regenerating additive. We have investigated their influence on the physical-mechanical parameters of regenerated asphalt concrete, obtained using the technology of hot recycling of asphalt concrete pavement applying the «in place» method. The experimental research has established the dependences of the physical and mechanical parameters (water saturation, compressive strength at 0 °С and 50 °С) of regenerated asphalt concrete on the content of an additive and stirring temperature. The mathematical models have been constructed in the form of second-degree polynomials that describe the dependence of water saturation and strength at the compression of regenerated asphalt concrete on the temperature of preparation and the content of a regenerating additive. It has been established that increasing the stirring temperature increases compressive strength at 0 °С; at the same time, compressive strength at 50 °С and the measure of water saturation decreases. The increase in the regenerating additive reduces all the examined physical and mechanical indicators. Based on an analysis of the results obtained, we have determined the regions of rational values of the stirring temperature of loose asphalt-concrete crumbs (125‒135) °С, as well as the content of an additive (0.26‒0.28) %, when preparing hot asphalt concrete mixture. In terms of physical-technical indicators, the resulting mixture meets the requirements set by DSTU B V.2.7-119:2011 «Asphalt concrete mixes and road and airfield asphalt concrete. Technical specifications» for hot fine-grained asphalt mixtures. The reported results could prove useful when devising a technology of hot recycling of asphalt concrete pavement by the «in place» method and for studies related to its improvement

Author Biographies

Vyacheslav Savenko, National Transport University Mykhailа Omelianovycha-Pavlenka, str., 1, Kyiv, Ukraine, 01010

Doctor of Technical Sciences, Professor, Head of Department

Department of Transport Construction and Property Management

Valentyn Honcharenko, National Transport University Mykhailа Omelianovycha-Pavlenka, str., 1, Kyiv, Ukraine, 01010

PhD, Associate Professor

Department of Transport Construction and Property Management

Sergii Illiash, M.P. Shulgin State Road Research Institute State Enterprise - Derzhdor NDI SE Peremohy ave., 57, Kyiv, Ukraine, 03113

Head of Department

Department of Normative and Engineering of Roadworks

Anatoliy Mudrychenko, M.P. Shulgin State Road Research Institute State Enterprise - Derzhdor NDI SE Peremohy ave., 57, Kyiv, Ukraine, 03113

Head of Laboratory

Laboratory of Road Construction

Ivan Balashov, M.P. Shulgin State Road Research Institute State Enterprise - Derzhdor NDI SE Peremohy ave., 57, Kyiv, Ukraine, 03113

Researcher

Department of Normative and Engineering of Roadworks

References

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Published

2020-06-30

How to Cite

Savenko, V., Honcharenko, V., Illiash, S., Mudrychenko, A., & Balashov, I. (2020). Substantiating the choice and optimizing the parameters for the technology of hot recycling of asphalt concrete road coating. Eastern-European Journal of Enterprise Technologies, 3(1 (105), 76–84. https://doi.org/10.15587/1729-4061.2020.203947

Issue

Vol. 3 No. 1 (105) (2020): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2020 Vyacheslav Savenko, Valentyn Honcharenko, Sergii Illiash, Anatoliy Mudrychenko, Ivan Balashov

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