July 27, 2023
Are you looking for a way to improve the performance and lifespan of your structures? Do you want to save time and money on your construction projects? If so, you might want to consider shotcrete as an alternative to conventional concrete.
Shotcrete is a technique that involves spraying concrete at high speeds onto a surface; it is used to create a strong and durable layer that can withstand various environmental and structural challenges.
In this blog post, we will explain what shotcrete is, how it works, and why it is a superior choice for enhancing the durability and longevity of structures.
We will also introduce you to a certified concrete contractor in Calgary who can provide you with high-quality and cost-effective shotcrete services for your structural and architectural needs.
Shotcrete is a term that refers to concrete that is sprayed at a high velocity onto a surface using a hose and nozzle.
The term shotcrete was coined in the early 20th century by an American engineer named Carl Akeley , who used it to describe his method of spraying concrete onto wire mesh to create sculptures of animals.
Since then, shotcrete has evolved into a widely used technique for constructing and repairing various types of structures, such as bridges, tunnels, dams, retaining walls, swimming pools, and more.
Shotcrete can be classified into two main types: dry-mix and wet-mix. Dry-mix shotcrete involves mixing dry cement, sand, and gravel in a hopper and conveying it through a hose using compressed air. Water is added to the nozzle just before spraying the mixture onto the surface.
Wet-mix shotcrete involves mixing water with cement, sand, and gravel in a batch plant or truck mixer and pumping it through a hose to the nozzle. The wet-mix method allows for more control over the water-cement ratio and produces less dust and rebound than the dry-mix method.
Shotcrete works by forming a strong bond with the substrate surface due to the high-impact energy of the sprayed concrete.
The high velocity of the concrete also compacts it and reduces the amount of air entrapped in the mixture, resulting in higher strength and density.
Shotcrete can be applied in thin or thick layers, depending on the design requirements and specifications. It can also be reinforced with steel bars, fibres, or mesh to increase its tensile strength and crack resistance.
Shotcrete can be applied to various shapes and forms, such as curved or irregular surfaces, without the need for formwork or scaffolding. This reduces labour and material costs and saves time and space on the construction site.
To create various textures and patterns, it can also be finished in different ways, such as troweling, brooming, carving, or stamping.
Shotcrete offers many advantages over conventional cast-in-place concrete to enhance the durability and longevity of structures. Some of these advantages are:
Shotcrete has a lower permeability and higher density than cast-in-place concrete, which makes it more resistant to water penetration, freeze-thaw cycles, chemical attacks, and abrasion.
It also has a higher bond strength with the substrate surface, which prevents delamination and spalling.
Shotcrete can be applied to any shape or form without the need for formwork or scaffolding. This allows for more creativity and innovation in design and construction.
It can also be applied in hard-to-reach or confined spaces where conventional concrete would be impractical or impossible.
Shotcrete reduces the labour and material costs associated with formwork or scaffolding. It also reduces the waste and environmental impact of concrete production and transportation.
Moreover, it can be applied faster and more accurately than cast-in-place concrete, which saves time and improves quality control.
Shotcrete has been shown to have higher long-term strength than cast-in-place concrete due to its lower water-cement ratio, higher density, lower porosity, better compaction, and improved microstructure.
Shotcrete is also more resistant to shrinkage cracking and creep deformation than cast-in-place concrete.
However, in order to enjoy all the benefits of professional structural shotcrete services , you need to hire a certified shotcrete contractor.
SprayForce Concrete is a certified concrete contractor in Calgary that specializes in shotcrete services for structural and architectural applications. We have over 20 years of experience in providing high-quality shotcrete solutions for residential, commercial, industrial, and municipal projects across Alberta, British Columbia, Saskatchewan, Manitoba, and beyond.
To learn more about our shotcrete services or receive a complimentary quote for your project, contact us today.