Kazakh scientists are creating new additives for bitumen and asphalt concrete to extend the lifespan of roads.

Bitumen is one of the key components of asphalt concrete, responsible for the strength, elasticity, and durability of road surfaces. However, its properties change under varying temperature conditions: at low temperatures, it becomes brittle, increasing the risk of cracks, while at high temperatures, it softens, leading to the formation of ruts (longitudinal depressions on the road surface). To address these issues, researchers at KazdorNII are working on the development of additives that can enhance bitumen's resistance to temperature fluctuations and improve its resilience to constant mechanical loads.

The specialists' research focuses on identifying the factors contributing to road wear and creating additives for bitumen that enhance asphalt's resistance to the climatic conditions of Kazakhstan. Scientific experiments involve testing various additives, some of which are made from recycled industrial waste. The use of secondary raw materials helps reduce the environmental impact during production. Preliminary results indicate that the new mixtures demonstrate higher strength and durability compared to traditional surfaces.

The institute's approach is based on comprehensive methods that combine laboratory experiments, field tests, and the implementation of pilot samples on road surfaces. Currently, several applications for grant funding have been submitted, which will aid in continuing research and acquiring new equipment for more precise experiments.

In the coming years, scientists plan to test new coatings on pilot road sections. If successful, the results of these developments will be published in scientific journals and secured with patents. Should the additives prove effective, it could represent a significant step towards improving the quality of roads in Kazakhstan, helping to reduce repair costs and enhance road safety.