Gunite, on average, lasts longer and is of superior quality than shotcrete. Gunite, for example, dries faster than shotcrete, resulting in a considerably smoother surface and avoiding severe shrinkage fractures. Gunite can also endure up to 9500 psi, which is far greater than shotcrete. These advantages are more important today than ever before, since most new homes are built with concrete foundations.
Shotcrete, on the other hand, is cheaper than gunite and has no long-term impact on the environment. Shotcrete is easy to apply and very durable. It can be mixed on site and will not dry out like cement mixers need air circulation for.
The main disadvantage of shotcrete is that it must be applied within a few hours of mixing. This limits its use to only small jobs or those who regularly receive the same job as shotcrete is not reusable.
Nowadays, shotcrete is used mostly for temporary flooring applications or where aesthetics are important such as in commercial settings. Gunite is usually used for foundation slabs because of its durability and ability to withstand high pressures over time.
Shotcrete is a pre-mixed, wet concrete that is pushed via a hose, whereas Gunite is a dry mix that is pumped through a hose and then met with water. A gunite pool shell is more difficult to shoot because it requires a more trained crew and nozzleman. The gunite mixture must be sprayed in a very even layer or the surface will not cure properly.
The main advantage of a shotcrete pool is cost. The price per square foot for a quality product is much lower than gunite. There are also options available for color and texture that cannot be done with gunite. On top of that, you do not need special equipment to apply shotcrete. You can get the job done by hand or using a power shovel. This makes shotcrete the clear winner when it comes to cost.
If you want a beautiful, glossy finish, then gunite is your choice. The pool shell will appear white until it cures completely, which can take up to a month. At that point, you will need to paint it or leave it as is so it can weather naturally.
Many people think that shotcrete pools look cheaper than they actually are. The truth is, they look the same once they have cured. If you prefer an unpainted look, then shotcrete is the way to go. It can be colored any color you like once it has set.
There you have it.
The primary distinction between the two is that shotcrete is applied pre-mixed with water and hardens where it falls. Gunite, on the other hand, is applied as a dry plaster that mixes with water as it exits the hose. Both methods use an autoclaved rock as the aggregate and spray on top of the base to build up the desired height. The choice of material depends on your project needs.
Other differences include price and availability of materials. Shotcrete is generally less expensive than gunite, and most builders have access to either method. As with any other type of concrete work, the more you pay, the better the quality will be. If you are looking for the cheapest option, then you should go for gunite. It may not last as long but if you need it quick, it can be done at a lower cost.
The main advantage of shotcrete over gunite is its ability to mix and pour right before use instead of waiting for materials to dry. This can be important if you are working in areas where there is no air circulation such as tunnels or below ground spaces. The mixer truck can make multiple trips per day to all parts of the construction site, so this is another advantage for shotcrete over gunite which usually must be mixed ahead of time and stored in large quantities away from the job site.
"Gunite," also known as "Dry-Process Shotcrete," is a term used to describe a well mixed combination of 1 part Portland Cement and 4 parts sand transported by air via a rubber gunite hose and laid by air pressure. The material is sprayed into place using a high-pressure sprayer while being swept along by a vehicle.
There are two types of guniting: wet and dry. In wet guniting, the cement and sand are mixed together with water before being sprayed onto the job site. This type of gunite is used for general applications over short distances. Dry gunite is used for concrete repair projects or when extra strength or resistance to corrosion is required. The cement and sand are mixed together in a hopper then fed into a second container where they are metered out through a nozzle attached to the end of the gunite hose.
Dry gunite is easy to use and has few environmental concerns because it does not contain any water. However, if water is present on the job site, it must be cleaned up before further work can be done. Wet gunite is more difficult to use but eliminates the need to clean up any spilled materials that may be left on the job site.
Mixing gunite requires careful attention to detail.
Southern Poolscapes, on the other hand, stated their case for why Gunite Pools are preferable to Shotcrete Pools. "The PSI strength of gunite is greater. True, gunite produces greater rebound, but if water has be added to the pre-mix, as it commonly does, the benefits are lost. Further, gunite is more resistant to staining from chlorine and other chemicals."
Finally, they noted that Gunite Pools are less expensive than Shotcrete Pools.
In conclusion, they said: "We recommend a gunite pool because it's more durable, looks better, and costs less."
Gunite pools are a type of plastic pool constructed out of layers of polyethylene sheeting bonded together with a resin. The sheets are coated with a fine powder called sand. When this mixture is pressed under high pressure, it becomes completely solid.
Shotcrete is the name given to concrete made by mixing cement with water and sand and allowing it to harden into a rock-hard material. The powder in shotcrete is not sand; rather, it is small stones or glass beads used to increase the density of the concrete.
Shotcrete pools are cheaper than gunite pools but they do not have many advantages over gunite pools. They are not as durable and tend to stain more easily.
Gunite is the technical word for dry processed shotcrete, and it is often used for vertical and overhead bridge, tunnel, and dam repairs. The concrete is poured into forms made of wood or metal and left to cure under pressure from inside the form.
In addition to bridges, gunite is used for parking garage floors, roadways, and other structures where a flat, smooth surface is needed. The pouring process is the same as for ordinary concrete except that a low-adhesion basecoat is usually first applied to prevent the concrete from sticking to the form.
There are two main types of forms used for gunite: open and closed. Open forms have no top cover and are simply frames with walls around the perimeter designed to hold the concrete in place while it cures. These forms are easy to use and inexpensive but make it difficult to see how the concrete is doing until it has completely cured. Closed forms have a removable top which allows workers to view the progress of the pour and any necessary adjustments to be made during this process.
Closed forms are also called "shotcrete forms" because they are shaped like small houses with openings for windows and doors. These forms are more durable than open forms and can even be used twice before replacing the fabric covering.