Marcello Alencar Tunnel
Rio de Janeiro, Brazil
The new Tunnel Expressway, replaces the High Perimeter and is fundamental to the new road system of the Port Region. Only in the urban area of the region, the route will be 3,610 meters long and have six lanes.
The secondary concrete was treated with approximately 50 tons of PENETRON ADMIX, in order to increase the impermeability of concrete. Where the joints of cross concreting and expansive tapes were installed PENEBAR SW-55 was also applied.