There are a few things you should be aware of when working around the third rail of an electric-powered passenger train.
Changing the Traditional Shotcrete Mixture to Suit Underground Applications
Concrete mixtures used in the shotcreting process have traditionally been low-slump mixtures.
Liberty Tunnels Phase 2
The Liberty Tunnels were opened in January 1924.
Using Accelerators for Shotcreting
Are you shooting overhead and need to build up a 6 in. (154.2 mm) layer in a single pass?
The Outstanding Repair & Rehabilitation Project
The Outstanding Underground Project
Canada Line Cut and Cover Tunnel Shotcrete Shoring
Driving north from the Fraser River on the 4.3 mi (7 km) corridor of Cambie Street, a main artery into downtown Vancouver, one is oblivious to the fact that up to 72 ft (22 m) below the surface is one of the largest shotcrete shoring projects in North America.
The Evolution of Rock Support in One Old Mine in Mexico
An old mine located in Queretaro State, about a 2-hour drive from Mexico City, now uses wet-mix shotcrete as an integral part of its ground control system.
The Heartland Corridor Clearance Improvement Project: Vaughan, Roderfield, Laurel, and Gordon Tunnels
As part of a 3-year project, Norfolk Southern Railway, which operates 21,500 mi (34,600 km) of track in 22 eastern states, is expanding 28 tunnels along the Heartland Corridor,
The Heartland Corridor Clearance Improvement
With sky-rocketing fuel costs for truck and air transport, moving freight over national railroads has become increasingly attractive to suppliers and manufacturers.