Shotcrete compressor. Description This guide is a companion document to ACI 506.
Shotcrete compressor. Shotcrete is a method of applying concrete projected at high velocity primarily on to a vertical or overhead surface. The impact created by the application consolidates the concrete. Since Carl Akeley introduced shotcrete to the construction industry in 1910, developments in materials, chemical admixtures, equipment, and techniques have led to significant advancements. The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete. The shotcrete process requires less formwork and can be more economical than conventionally placed concrete. Shotcrete has grown into an important and widely used construction technique. It’s typically used when forming requirements are difficult or prohibitively expensive or as another repair tool in the designer’s and contractor’s tool kits. Although the hardened properties of shotcrete are similar to those of conventional cast-in-place concrete, the nature of the placement process results in an excellent bond with most substrates, and rapid or Description This guide is a companion document to ACI 506. Most facets of the shotcrete process are covered, including application procedures, equipment requirements, and responsibilities of the shotcrete crew. Because of continuing research and development in materials, equipment, and construction procedures, this guide is revised periodically to reflect current industry practice. The shotcrete process requires less formwork and can be more economical than conventionally placed concrete. Included are the requirements for materials; proportioning; and application of structural and nonstruc-tural shotcrete, including structural and nonstructural fiber-reinforced shotcrete. Shotcrete is an important and widely used construction tech-nique. Relative to conventional concrete, shotcrete is now capable of providing similar performance at a lower cost (made possible by reductions in labor and materials required for formwork), and it can be placed The shotcrete process is typically used to restore structural integrity, increase concrete cover over reinforcement, or both. Shotcrete is applied using a wet- or dry-mix process. The wet-mix shotcrete process mixes all ingredients, including water, before introduction into the delivery hose. 2, “Specification for Shotcrete,” and provides information on materials and properties of both dry-mix and wet-mix shotcrete. The dry-mix shotcrete process adds water to the mix at the nozzle. . An ACI-certified Shotcreter (Wet-Mix Process) is an individual who has demonstrated knowledge of the wet-mix shotcrete process (via written examination) and the ability to properly place wet-mix shotcrete (via performance examination shooting a limited-size test panel). nkpovi xos enrgf egzstgth egi mtyh xsnocqa banlx baejl wmwaw