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UndergroundGeneralThe Use of Shotcrete for Construction of Backfill Barricades in Mining Environments

Craig McDonald and Joe Hutter

As we all know, the mining process is essentially the excavation and extraction of rock, ore, gems, or other minerals from the earth?s surface.

RepairGeneralPointe de la Prairie Lighthouse

Patrick Giroux and Simon Reny

GeneralRetarders versus Set Stabilizers

Dan Millette

When concrete is cast, a retarding admixture is often used to keep the mixture workable until finishing is completed.

GeneralShotcrete in Qatar

Lars Balck, Robert (Bobby) Oyenarte, Buddy Williams, and T. J. Williams

Crom International LLC (Crom), a subsidiary of The Crom Corporation, recently completed two large shotcrete storage tank projects in Qatar totaling over 144 million gal. (545,000 m3) of usable potable water storage.

GeneralDoes Dry-Mix Shotcrete Have to be Dusty?

Joe Hutter

An underground environment is often fraught with hazards – some obvious and some not-so-obvious.

GeneralShotcrete Hose/ System Cleanout Safety

Carl Baur

I am writing this article to reinforce to the members of wet- or dry-process shotcrete crews that the cleanout process can be very dangerous.

GeneralHose Selection and Safety in Concrete Pumping

Andy Kultgen

There are many options for hoses to use for the concrete pumping portion of wet-process shotcrete application,

InternationalGeneralShotcrete Testing Around the World

Lars Balck

Charles Hanskat?s article on ?Shotcrete Testing?Who, Why, When, and How?1 in the Summer 2011 issue of Shotcrete magazine provided us with an excellent overview of shotcrete testing in the United States.

GeneralShotcrete Placed in Multiple Layers does NOT Create Cold Joints

Charles S. Hanskat

Designers and inspectors often confuse placement of multiple layers of shotcrete in building out a section with cold joints experienced in cast-in-place concrete construction.

GeneralBetter Bonding to the Substrate Enhances Durability

Top 10 Sustainability #8

Concrete is, by the definition of sustainability, the perfect construction material.