The Ministry of Transportation of Quebec?s (MTQ?s) shotcrete specification document has evolved over the 40 years since it was first introduced and has changed dramatically over the past 10 years.
Shotcrete Repairs—the Main Development Trend in Poland
The shotcrete method first appeared in Poland in the 1930s.
Shotcrete Finds a Home at the New Home of the Detroit Lions
For 26 years, the Detroit Lions called the Silverdome in Pontiac, MI, their home.
What is the International Concrete Repair Institute?
The mission of the International Concrete Repair Institute (ICRI) is to be a leading resource for education and information to improve the quality of repair, restoration, and protection of concrete and other structures.
Overhead Dry-Mix Shotcrete
In overhead shotcreting, it is important to first make sure that the reinforcing steel and/or mesh is tightly tied and anchored in place.
Structural Shotcrete Overhead
As a contractor, I have frequently been asked if shotcrete can be used for overhead applications.
Overhead Shotcrete
When you say overhead, people invariably think of fixed costs, salaries, and the general costs of running a business.
Shotcrete for Structural Repair of Key Light Rail Facility in Boston
In 1922, the Boston Transit Commission built Shawmut Junction, a ?yover located in Boston, MA.
Curing Silica Fume Shotcrete with Wet-Sprayed Cellulose
Chloride-induced corrosion is the primary cause of deterioration in many concrete bridges in Canada and the northern United States. For corrosion to take place, the chloride ions permeate through the interconnected pores of the concrete toward the embedded steel reinforcement and attack the passive layer that forms around the steel during the hydration process of concrete. Once this passive layer is destroyed, corrosion proceeds, resulting in a reduction in the structural integrity of the structure in addition to the onset of spalling of the concrete cover. To restore the serviceability of the structure and extend its service life, the deteriorated concrete is usually removed, the reinforcement is replaced if necessary, and the concrete is replaced with a durable repair material that has high resistance to chloride ion transport. In the province of Ontario, Canada, partially deteri-orated concrete bridge sofï¬ts are typically repaired with shotcrete containing silica fume.
Quality Management of Shotcrete in North America
As for all construction materials, a proper program of quality management should be implemented in shotcrete construction to protect the owner™s investment. This article briefly examines typical shotcrete Quality Management (QM) practice in North America. QM can be considered to be comprised of Quality Assurance (QA) and Quality Control (QC) functions.