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26. 08. 2019

Circular economy: Colas Croatia recycles blast furnace slags!

At the end of 2017, Colas Croatia worked on the reconstruction of 32,500 m2 of asphalt pavement on the DC1 national road between Jošani and Udbina.

The work consisted in laying a new asphalt concrete wearing course. 

For the first time in Croatia, ferromanganese slag (a by-product of the cast iron industry) was incorporated into part of the mix to improve skid resistance. 

Skid resistance values measured on site are higher than the requirement level set in the contract.

This experimentation makes it possible to validate the incorporation of slags into asphalt formulas and to enhance their use.

Further tests will be carried out on the national road in 2019.