Kazakhstan uses a by-product from aluminum
production, known as bauxite residue, in road construction. Domestic
researchers highlight that this material is two-three times stronger and more
durable than traditional options. The durability and stability are confirmed by
studies on highways where it was used. It was laid on two sections at once – on
the Pavlodar-Semei-Kalbatau highway seven years ago and on the Omsk-Maikapshagai
road twenty years ago. According to experts, using the new technology will save
money and enable to build up to 5,000 kilometres of new roads annually.
«As laboratory tests show, the strength of the
material samples increases. This bauxite residue was used in the foundation of
highways. We are closely studying this experience. Therefore, in the future, it
will be widely scaled up in all road projects in the country,» said Kairat
Mukhambetkaliyev, spokesperson for the Kazakhstan Road Research Institute.
Also, scientists are currently developing
other innovative materials—for example, additives for self-compacting concrete
and mineral powder for asphalt concrete.
