ABSTRACT

This chapter notes that different language is used in different parts of the world to describe what is referred to in North America, Australia, South Africa (and other parts of the world) as shotcrete. In Europe, the term Sprayed Concrete (or Spritz Beton in German-speaking countries) tends to be the preferred term. There are two basic types of shotcrete: wet-mix shotcrete, which is similar to pumped concrete, in that it is pumped down a hose, but then compressed air is added at a nozzle at the end of the hose to pneumatically project the material at high impacting velocity onto the receiving surface. The second type is dry-mix shotcrete, where predampened dry materials are pneumatically conveyed down a hose to a nozzle, where water is added to produce a mixture that is projected onto the receiving surface at high impacting velocity. This chapter then provides a glossary of terms specific to shotcrete. Examples include nozzleman, rebound, overspray, bench shooting, sagging, sloughing, finish coat, natural finish, etc.