Penetrating seawater carries bacteria that form colonies – biofilm. The bacteria attack the concrete that is supposed to prevent stones from loosening from the tunnel walls. The concrete becomes porous and risks breaking apart. The biofilm...
Transportes licita por 10,7 millones de euros la asistencia tcnica para construir el primer tramo de la lnea de alta velocidad Burgos-Vitoria
source:https://www.transportes.gob.es/el-ministerio/sala-de-prensa/noticias/jue-08052025-1319
Factory Testing Complete on DC Water’s first tunnel boring machine for the Potomac River Tunnel
source: https://www.dcwater.com/about-dc-water/media/news/factory-testing-complete-dc-waters-first-tunnel-boring-machine-potomac
Factory Testing Complete on DC Water’s first tunnel boring machine for the Potomac River Tunnel
https://www.dcwater.com/about-dc-water/media/news/factory-testing-complete-dc-waters-first-tunnel-boring-machine-potomac
Construction is underway as crews start digging the tunnels connecting the Eglinton Crosstown West Extension to the western end of the Eglinton Crosstown LRT (to be known as Line 5 Eglinton when it opens) at Mount Dennis Station. (Metrolinx photo)...