GeneralDo You Have a Project Disaster Plan
Thomas H. Adams
Read MoreIt is inevitable that every ï¬rm will have to verify its work at some point in time. No matter how the process gets started, each contractor and supplier should be prepared to methodically respond in a timely manner. This article will offer some important concepts
GeneralThe Value of Shotcrete Accessories
Patrick Bridger
Read MoreI am frequently asked by contractors to aid in the selection of shotcrete equipment and acces-sories for many types of shotcrete applications, both wet-mix and dry-mix processes, including concrete repair and restoration, pool construction, mining, tunneling, soil nailing, slope stabilization, and refractory applications. There are
GeneralEffective In-Place Testing of Bond Strength with Swedish Friction Grip
Erik Nordström and Jan-Åke Grändås
Read MorePermanent modern shotcrete support in hard rock conditions is commonly based on achieving sufï¬cient bond strength to the rock. A system with reinforced shotcrete with mesh reinforcement or ï¬bers is dependent on the bond strength being able to carry loads from loose blocks. This is
GeneralSummer Shotcrete Classic Yoggy
George D. Yoggy
Read MoreAt the beginning of the 20th century, signif-icant pieces in the foundation of America™s Industrial Revolution were established in the Lehigh Valley of Eastern Pennsylvania. Iron and steel, important products to the early development of our continent, were produced in Bethlehem, PA, and the first
GeneralWet-Mix or Dry-Mix Shotcrete… or Both?
Craig McDonald
Read MoreFor some, it may seem inconceivable, but a few equipment manufacturers produce machines capable of both wet-mix and dry-mix shotcrete spraying without converting the equipment. The method these machines use is known as the wet-thin stream method of conveyance.The design is based on the rotor-style
GeneralWhat Should You Consider When Choosing a Wet-Mix Shotcrete Pump?
Paul Sulman
Read MoreWhen it comes to pumping a typical concrete mixture, let™s face it”most pumps out there will work. When it comes to pumping a shotcrete mixture, however, your choice of pumps is critical.Shotcreting can be the most demanding job for a concrete pump. Basically, you are
GeneralEquipment Maintenance
Ray Schallom III
Read MoreThis article touches on both wet- and dry-mix shotcrete equipment maintenance that is not typically in the owner™s manual. Equipment manuals for the dry- and wet-mix machines have a section on maintenance that tells you what to grease and check on a daily basis. Wet-mix
GeneralQuality and Shotcrete
Edward Brennan
Read MoreMany factors affect the quality of shotcrete. The shotcrete process itself provides a unique and effective placement technique for portland cement concrete. For the shotcrete process to yield the highest possible quality product, however, many factors must be considered. The shotcrete process has both obvious
GeneralRespiratory Protection
Lynn Feiner
Read MoreAnswer: Respiratory illness can take years to develop. As with smoking, the delayed but high-risk results sometimes make it difï¬ cult, crucial, to convince employees to wear respi-rators in certain environments, even if the air does not appear to be harmful. The key to convincing