Kazakhstan plans to produce mineral powder for asphalt concrete from metallurgical slags and ash.

On July 9, 2024 at the meeting of the Government of the Republic of Kazakhstan on the development of road industry “KazdorNII” presented a report on the possibilities of using technogenic waste and raw materials in road construction. It is expected that such technology will reduce the cost of materials, increase the strength and durability of roads, as well as reduce carbon dioxide emissions, which will favorably affect the environment.

In order to expand the use of technogenic waste, specialists of “KazdorNII” together with LLP “ERG Recycling” and JSC “Qarmet” started research work on the development of technology for the production of modified mineral powder for asphalt concrete. It is supposed to use fly ash and granulated slag as the main raw materials. According to experts, the use of technogenic waste in road construction is not only an effective solution to the challenge of utilization, but also a way to significantly reduce the cost of construction materials.

“The first phase of laboratory tests has been passed, which confirmed the advantage of modified mineral powder over traditional analogs. The new processing technology will reduce the cost of materials due to the use of secondary resources and reduce the burden on the environment,” said Kairat Mukhambetkaliev, head of the science department of KazdorNII, Ph.D., Candidate of Technical Sciences.

Experts emphasize that the economic efficiency of the project makes it promising for large-scale implementation. It is expected that after successful completion of the tests, the technology will be recommended for application in major road projects of the country.