Shotcrete is a construction technique which involves conveying concrete through a hose and pneumatically projecting at high velocity onto a surface.
Shotcreting is most often applied where it is not practical to use regular concrete and in recent years has become an important construction tool, especially in mining and inshoring techniques with open excavations. It is regularly used in slope stabilisation and tunneling.
Shotcrete is placed and compacted at the same time due to the force with which it leaves the nozzle. It can be sprayed onto any type or shape of surface including vertical or overhead areas.
Shotcreting works particularly well in vertical construction and excavations where temporary shoring is required. It is simple for experienced personnel to apply and renders a quality finish. Because of its unique qualities and its sparse distribution under pressure, it is often used on roads, construction and residential projects where it can be applied quickly and sets rapidly
A wide variety of final finishes can be achieved using shotcrete including gun, screed, wood float, sponge, steel trowel and architectural mock rock look.
Over the many years we have been employing this technique, the team at GSS has seen changes in the way shotcreting is used. One of the many exciting advancements has been the use of specialist fibres in the mix reducing the need to install expensive steel reinforcement.
Steel is still used, however, to solve specific construction challenges.