Retarders versus Set Stabilizers
When concrete is cast, a retarding admixture is often used to keep the mixture workable until finishing is completed.
Shotcrete in Qatar
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.
Does Dry-Mix Shotcrete Have to be Dusty?
An underground environment is often fraught with hazards – some obvious and some not-so-obvious.
Shotcrete Hose/ System Cleanout Safety
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.
Hose Selection and Safety in Concrete Pumping
There are many options for hoses to use for the concrete pumping portion of wet-process shotcrete application,
Shotcrete Testing Around the World
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.
Shotcrete Placed in Multiple Layers does NOT Create Cold Joints
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.
Better Bonding to the Substrate Enhances Durability
Concrete is, by the definition of sustainability, the perfect construction material.
Limestone Cement in Shotcrete
Today, the use of supplemental cementitious material (SCM) (fly ash, microsilica, or slag) with portland cement is commonplace.