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Comparative Analysis of the Carbon Footprint of Two Asphalt Concrete Mixtures: Conventional Hot Mix and Rubber Crumb Modified
https://doi.org/10.18412/1816-0395-2026-5-60-65
Abstract
A comparative analysis of the carbon footprint of two types of asphalt concrete mixtures – conventional hot mix and rubber crumb modified, obtained from recycled automobile tires – is presented. It is shown that the use of rubber crumb ensured a reduction in total greenhouse gas emissions by 1.46 kg CO2-eq./t of finished mixture (approximately 2.5 %), mainly due to partial replacement of the most carbon-intensive component – bitumen. It was established that more than 83 % of the carbon footprint is formed at the stages of raw material extraction and transportation, which indicates the dependence of the environmental efficiency of the product on the choice of suppliers and logistics. It is concluded that the technology of asphalt concrete modification with rubber crumb not only complies with the principles of the circular economy, ensuring waste utilization, but also demonstrates a positive environmental effect within the boundaries of the considered system.
About the Authors
A. D. Khakimova
Peter the Great St. Petersburg Polytechnic University
Russian Federation
Russian Federation
Post-graduate Student
L. M. Molodkina
Peter the Great St. Petersburg Polytechnic University
Russian Federation
Russian Federation
Dr. Sci. (Phys.-Math.), Professor
N. V. Maydanova
JSC “Asphalt Concrete Plant No. 1”
Russian Federation
Russian Federation
Head of the Research Center
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Review
For citations:
Khakimova A.D., Molodkina L.M., Maydanova N.V. Comparative Analysis of the Carbon Footprint of Two Asphalt Concrete Mixtures: Conventional Hot Mix and Rubber Crumb Modified. Ecology and Industry of Russia. 2026;30(5):60-65. (In Russ.) https://doi.org/10.18412/1816-0395-2026-5-60-65
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