The MBTA Red Line Emergency Repairs
The Massachusetts Bay Transportation Authority (MBTA) is the operator of the Red Line Subway in Boston, MA.
Fiber-Reinforced Shotcrete for Underground Mines in the New Millennium
Shotcrete mixture designs for underground applications vary from mine to mine throughout North America,
Western U.S. and International Water Projects Using Shotcrete
Shotcrete is used for many different hydraulic projects in the arid western part of the U.S.
Embrittlement of Fiber-Reinforced Shotcrete
In underground construction, minimum performance levels for shotcrete with respect to compressive and flexural strength, ductility, and resistance to the environment are usually required to be maintained over the entire design life of a lining.
Expanded Metal Sheet Forming
When the Port Authority of Allegheny County decided to build a busway from the Pittsburgh International Airport to downtown Pittsburgh, PA, part of the project incorporated rehabilitating an existing 2900 ft (884 m) tunnel.
Development of a Wet-Mix Shotcrete for a Deep Mine
In 2002, an economic study and testing determined that application of wet-mix shotcrete by mechanized application methods permitted substantial gains in cost and in production levels.
2006 Outstanding Underground Project: Weehawken Tunnel and Bergenline Avenue Station
The reconstruction of the Weehawken Tunnel for the New Jersey Transit Hudson-Bergen Light Rail System was recently completed.
Canada’s North Country
The Canadian mining industry has been experiencing a renaissance recently and part of this is the discovery of diamond deposits in the Northwest Territories.
Determination of Early-Age Compressive Strength for FRS
The strength of the concrete matrix at early ages is an important factor in successful ground control using fiber-reinforced shotcrete (FRS).