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.
Incline Tunnel—S&S Quarries, Inc
The Incline Tunnel, S&S Quarries, Inc., is the access to an underground rock mine in Knoxville, IA, owned by Bruening Rock Products.
The Outstanding Underground Project
Shotcrete in China’s Longest Tunneling Project
In the Guanjiao Mountains of western China, at an average altitude of 11,483 ft (3500 m), two parallel railway tunnels 21 miles (33 km) long are being constructed
Mine Visits and Safety
Many of us in the shotcrete world have had the occasion to either visit or work in underground mines.
Equipment Selection – The Key to a Successful Soil Nailing Project
There are many things to consider when selecting the appropriate equipment for a soil nailing project.