UndergroundRapid-Setting Cement in Shotcrete
Mike Ballou
Read MoreEvolving technology in the shotcrete industry using a rapid-setting mixture with calcium sulfoaluminate (CSA) cement in lieu of a more common portland cement mixture is helping to meet the challenges for shotcrete repairs and underground projects throughout the world.
RepairUndergroundStructuralSoudan Mine Shaft Rehabilitation
Shane McFadden
Read MoreThe Soudan Mine is a historic taconite and iron ore mine in Northeastern Minnesota.
RepairUndergroundStructuralShotcrete Work in Confined Space Area
Ted W. Sofis
Read MoreShotcrete work, by its very nature, provides an excellent method of installing concrete materials in storage bins, hoppers, culverts, inlets, vaults, tanks, and other areas, where it is difficult to transport and efficiently install materials by conventional casting methods.
RepairUndergroundStructuralUnderground Shotcrete Roof Repair of Hanging Lake Tunnel
Warren Harrison
Read MoreDuring 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.
RepairUndergroundStructuralCrane and Other Equipment Savings or Elimination
Top 10 Sustainability #4
Read MoreAn often overlooked sustainability benefit of the shotcrete process is one of the most basic of construction problems: the conveying and handling of materials.
RepairUndergroundStructuralChetoogeta Mountain W&A Railroad Tunnel
Edwin Brady
Read MoreHistorical restoration/preservation is not only a challenging field of construction but also one that offers the special reward of preserving history for future generations,
RepairUndergroundStructuralThe Influence of Reinforcement on Relative Creep Deformations in Shotcrete Linings
E. Stefan Bernard
Read MoreShotcrete is now widely used for ground control in underground mining and civil tunnel construction throughout the world.
UndergroundStructuralWhen to Extract Cores
Lihe (John) Zhang
Read MoreDuring preconstruction testing and mockups, as well as during shotcrete production, a minimum specified compressive strength is always required in the project specification.
RepairUndergroundAccelerator Dosing Pump Calibration and Verification
Lihe (John) Zhang
Read MoreAccelerators are widely used for underground shotcrete applications.
RepairUndergroundStructuralShotcrete Nozzleman Basics? Vertical Wall Construction
Oscar Duckworth
Read MoreWhy Specific Techniques at the Footing to Wall Joint Are Essential to Product Quality