Underground Shotcrete Roof Repair of Hanging Lake Tunnel
During a Federal Highway Administration annual safety inspection in March 2007, a crack was found in the flat roof portion of the cut and cover section of the Hanging Lake Tunnels along Interstate 70 in Glenwood Springs, CO.
Crane and Other Equipment Savings or Elimination
An often overlooked sustainability benefit of the shotcrete process is one of the most basic of construction problems: the conveying and handling of materials.
Chetoogeta Mountain W&A Railroad Tunnel
Historical restoration/preservation is not only a challenging field of construction but also one that offers the special reward of preserving history for future generations,
The Influence of Reinforcement on Relative Creep Deformations in Shotcrete Linings
Shotcrete is now widely used for ground control in underground mining and civil tunnel construction throughout the world.
When to Extract Cores
During preconstruction testing and mockups, as well as during shotcrete production, a minimum specified compressive strength is always required in the project specification.
Accelerator Dosing Pump Calibration and Verification
Accelerators are widely used for underground shotcrete applications.
Shotcrete Nozzleman Basics? Vertical Wall Construction
Why Specific Techniques at the Footing to Wall Joint Are Essential to Product Quality
ODOT U.S. Highway 26 Dennis L. Edwards Tunnel Project
The Danger of Fallouts in Overhead Shooting
The volume of shotcrete required to cover an area of only 3 ft2 (0.3 m2) with a 4 in. (100 mm) thickness would typically weigh approximately 140 lb (64 kg), a weight that?if dropped from a height of 10 ft (3 m)?would seriously endanger the life of any individual standing below it.