Naturally occurring sulfates are common in soils within certain regions of the United States and Canada, especially the western United States and prairie provinces of Canada.
EFNARC Nozzleman Certification Scheme
EFNARC was an acronym for European Federation of National Associations Representing producers and applicators of specialist building products for Concrete,? which was founded by the European concrete industry in 1989.
Part II of a Two-Part Series on Wet-Mix Equipment Maintenance
Maintenance Fundamentals for Nozzlemen: Often Overlooked Equipment and Maintenance Essentials Can Dramatically Influence In-Place Quality. Do you know what they are?
Awareness of Cement Burns
Most experienced concrete professionals are familiar with the hazards associated with portland cement mixtures, yet despite the precautionary steps most of those professionals follow, hospital emergency rooms, year after year, see far too many cases of cement burns.
Shotcrete Accelerators for Wet-Mix
Unlike traditional concrete accelerators, shotcrete accelerators are not added to the mixture during batching, but rather introduced to the mixture at the nozzle in wet-mix shotcrete application.
Shotcreting on Frozen Ground
The Northern Boulevard Crossing (NBX) is the keystone portion of the massive multi-billion-dollar East Side Access (ESA) Programme by the Metropolitan Transit Authority Capital Construction (MTACC) to bring Long Island trains into and out of New York City’s Grand Central Terminal.
Improper On-Job Lubrication Will Dramatically Reduce Wet-Mix Equipment Service Life
Part I of a Two-Part Series on Wet-Mix Equipment Maintenance: Do you know how to properly lubricate your wet-mix pump?
Fallouts Can Be Deadly!
Many years ago, when the use of shotcrete in an underground support system was not as popular as it is today, I witnessed a mine foreman walk into an underground opening to admire the job his shotcrete crew had done placing shotcrete only an hour or two earlier.
The Use of Shotcrete for Construction of Backfill Barricades in Mining Environments
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.