ALGIERS SUBWAY, ALGIERS / Drytech restored a 4 km-long section of the underground railway in Algiers. The underground carries around 110 million passengers every year, and Line 1 runs close to the sea, exposing the structure to a 6-8 metre water head.

Various systems were used to waterproof the tunnels and stations, none of which managed to guarantee 100% impermeability. This led to the need for definitive restoration work.

After worldwide research, Eurometro made a proposal to the Ministry of Transport in Algeria to use the Drytech Restoration System, based on DRYflex acrylic resin injections made from inside the structure.

The successful restoration of the underground railway in Milan in 2004 played in important role in this decision.
Drytech carried out the work with its team of specialists for large international sites.