The Outstanding Underground Project
Overhead Shooting against PVC Membrane
Overhead shotcrete application against any substrate is challenging. Shooting against a polyvinyl chloride (PVC) membrane waterproofing system increases the difficulty and danger of the process.
Shotcreting the East Side Access Program
Prior to 9/11, all structural wall and tunnel concrete applications in New York, NY, used the form-and-pour concrete placement method.
Shotcrete Lining Innovations in the United States
Historically, the permanent concrete linings for underground structures have been installed using form-and-pour methods but the use of shotcrete or sprayed concrete for the structural linings is becoming increasingly more common.
Towards Automated Concrete Spraying
Operating a remotely manipulated shotcrete placing system is one of the most demanding tasks in underground mining and tunnel construction.
Shotcrete Use in the Gold King Mine Rehabilitation
The Gold King Mine Level 7 Portal is located at elevation 11,438 ft (3486 m) on the North Fork of Cement Creek, approximately 8 miles (13 km) north of Silverton, CO.
Creating a Foundation for Success: The Use of Lidar in Tunneling Projects
Shotcrete placement requires close attention to safety; when combined with the difficult working conditions of a tunnel, overhead placement requires even greaterawareness of potential hazards.
Simple Still Works
Coastal Gunite Construction recently executed a few phases of a storm sewer rehabilitation in a line running under the Blue Plains Advanced Wastewater Treatment Plant operated by the District of Columbia Waterand Sewer Authority.
Cellular Sprayed Concrete
Cellular sprayed concrete is an innovative method of remixing ordinary portland cement (OPC) concrete into a high-performance concrete (HPC) by adding cellular material and silica fume or other powdered admixturesat a jobsite.