MOSCOW, Dec 16 (Sputnik/APP): Researchers have identified a promising and environmentally friendly method to recycle used tires by incorporating their components directly into concrete, a solution that not only enhances material performance but also reduces waste.
The research was conducted by a team from Don State Technical University (DSTU) in collaboration with scientists from Azerbaijan and Türkiye, offering an innovative alternative to conventional tire recycling practices.
According to the Russian Environmental Operator, only 5–10 percent of materials recovered from recycled tires can currently be reused in the production of new tires. While waste rubber is often repurposed for plumbing products, flooring materials, drainage components, or asphalt mixtures, DSTU experts note that manufacturing these products is typically labor-intensive and costly.
To address these challenges, the international research team proposed using rubber particles and steel fibers extracted from worn tires as components in functional concrete mixtures.
Sergey Stelmakh, head of the Department of Construction of Unique Buildings and Structures at DSTU, explained that concrete strength increases when carefully measured amounts of rubber filler particles and small quantities of steel fibers are added. When rationally dosed, these additives can enhance concrete strength by up to six percent.
The improvement, he noted, is primarily due to the reinforcing effect of steel fibers, which help strengthen the concrete matrix. However, researchers cautioned that excessive fiber content may reduce effectiveness and negate the benefits.
The study highlights a practical approach to sustainable construction, offering a cost-effective way to recycle tire waste while improving the performance of building materials.
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