Spray On Concrete Installations

Sydney Concrete Resurfacing, Spray On Concrete 0 Comments

Spray on Concrete Driveway Installation Explained

If you’re looking for some basic information on how a spray on concrete driveway is installed, this is the article which best describes the installation process. The majority of people today are not familiar with spray on concrete driveways as a choice for homes and businesses. Indeed, not all of us know about this form of concrete referred to in some applications as this type of concrete resurfacing is also called shotcrete. This article will explain the installation process of concrete resurfacing as well as the many ways it’s used in many different construction jobs at present.

Basically, concrete resurfacing is completed using projected concrete. Invented quite effectively in the early part of the 20th century, spray on concrete was developed as a method for using concrete to fill in casting molds. Earlier forms of concrete were in a dry mixture which was pushed by air pressure straight away into the mold by an air compressor.

Once the concrete was discharged, the dry mixture became wet, enabling it to get into and stick or adhere inside the mold, taking its shape. A Mr. Carl Akeley, who developed this technique, had this patented under his name in 1911 and included his concrete spraying device or ‘cement gun’ which was also invented by him. Mr. Akeley also coined the term gunite for the cementing material which it created.


Additional Uses of Spray Concrete

Aside from installing a spray concrete driveway, more uses for spray on concrete soon become quite apparent. Since we could now spray concrete on any horizontal or vertical surfaces, the resurfacing spray is easily applied on the sides of buildings and other structures, the spray on could also be utilized as a patching material and also as filler if cracks may have shown themselves on walls or even in foundations and concrete bases like driveways.

This method also made the building of walkways faster in numerous front yards and patios as well, because spray on concrete could be installed in a just a few minutes as compared to the duration it took to blend and apply concrete manually.

Spray on concrete driveways using the dry method was the standard practice until the mid-1950’s and continued to get better and more efficient. The dry method is still in use today and requires placing the dry mix into a hopper device, after which is run into a hose with a water hose also attached at the end.
When the concrete is pushed out of the hose with pressurized air and in the device, the worker simply corrects the quantity of water which is added to the dry mixture.  This creates a concrete mix which is easy to point and shoot concrete with. It will set and cure in the similar duration of time as any other way of installing a concrete object or conventional concrete driveway.
During the 1950’s and 60’s another option for to spray on concrete was invented. Known as the wet method, this operation required the use of ready-mixed concrete. Similar to the dry method, air is pressurized and used to push the concrete mix into a hose and out of a spray nozzle designed specifically for concrete. In using the wet method, the hose operator will not need to correct the mix of water and dry concrete materials because that operation has already been done by pre-mixing the concrete.

Contractors who prefer this technique enjoy the fact there is no possibility of mixing too much water into the mixture, which may lead to a weak concrete texture and density. While those who like the dry method believe that the correctly mixed concrete and water create a better product which is stronger and more durable than the ready-mix used with the wet method to install a spray on concrete driveway.

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