In the past, contractors and even many homeowners who know about many concrete methods only knew of it as gunite and shotcrete. Though now there is more information concerning spray on concrete. If you have possible plans of installing a spray on concrete or Gunite pond, yet have no idea what spray on concrete and Gunite until you read this article and for those that know spray on concrete, that would be half true. Actually, spray on concrete is a general phrase used for referring to the process of projecting concrete or mortar via a wet or even a dry application method.
There is also Gunite, which refers solely to the dry-mix system in which the dry mixture of cement and aggregates goes through a hose to the nozzle using compressed air; the water is introduced right before the application on a surface. And so, essentially what comes out is basically the same as wet concrete. Its actual application is the only real difference between the two.
Usually, as people think about concrete, we think of concrete mixtures which are poured into forms which contain steel rebar and wire mesh reinforcing materials that is then let alone to to cure and set up properly. The spray on concrete or Gunite process enables the concrete to be sprayed in position, making it much more convenient.
Spray on concrete is a wet spray method, which means meaning that the concrete mix is moistened with water and pushed through the industrial strength hose using compressed air where it is sprayed onto the surface of the project. Gunite is composed of a dry mix which is forced through the hose also by compressed air until it gets to the nozzle of the concrete “gun”, by then the water is introduced into the mix where it is blended in as it sticks to surface of the project.
Spray on Concrete and Gunite – The Differences
Spray on concrete is known as an all-inclusive phrase which describes spraying concrete or mortar using either the dry or wet mix method of application. Even though, it can often be used to differentiate between gunite as a wet-mix treatment. The term shotcrete or spray on concrete was first given definition by the U.S. Based American Railway Engineers Association back in the early 30’s and by the 50’s; spray on concrete was known as the general classification for the spray concrete process of application.
The term “Gunite” is what the dry-mix process is often called, by which the dry mixture of cement and aggregates is pushed by air pressure through the hose and the nozzle. This is where water is introduced right before application on any solid surface. The gunite was the first word given by Mr. Akeley and was patented in the early 1900’s in the state of North Carolina, USA. All of the concrete mix is shot through using pneumatic pressure with a kind of gun, that’s why we have the “gun” in gunite concrete.
Gunite as a term was actually the trademark name used by the Allentown company, which was the oldest maker of gunite tools and machines. Any other makers were hence forced to utilize other terms to refer to the process like shotcrete, pneumatic concrete, guncrete, and spray on concrete. Shotcrete and spray on concrete became the most widely used terms aside from gunite, and after the later growth off the wet mix type came to be utilized to describe both methods of application.
Ultimately, we could say that apart from the very small variations, spray on concrete and Gunite function similarly. There are minor differences like how each method may be better for wall or ceiling application which is possibly the only real comparison between the two types of spray on concrete.