NLMK Lipetsk, NLMK Group’s flagship production site, has completed the construction of a road in the village of Teploye, Lipetsk region, employing a new soil stabilization technology, which uses steel slag. This road will not need repairs for at least three years, and has a price tag three times lower than regular asphalt and concrete roads.
NLMK and BFB, a resident of Skolkovo Innovation Center, have developed the soil stabilization technology, which uses steel slag fines, a by-product of the steelmaking process.
First, special-purpose machines mix the existing soil with slag in equal parts. Then a small amount of cement and a unique modifier are added. This special compound makes the road surface stronger and more ductile. Then the roadway is compacted with pneumatic rollers to form a hard surface with a high load-bearing capacity.
In 2018 BFB used this technology for the construction of 6,000 square meters of flooring in the Logistics Center at NLMK Kaluga (a part of NLMK Group). This time the innovative technology was used to repair the approximately 1-km-long main road at Teploye Village with a total area of 4,000 square meters. (NLMK/Ukrainian metal)