Concrete sandblasting is a type of abrasive blasting. Concrete sandblasting basically involves abrasive material being blasted onto a surface by use of a powerful stream of pressurised air. By using high-pressure blasting techniques, rough surface can be smoothed, roughened, or shaped to eliminate pollutants.
Bead blasting, soda blasting, and shot blasting are just a few of the sandblasting processes available and concrete sandblasting is an especially popular choice, because the material is used in so much of modern construction.
Before doing concrete sandblasting, make sure you’re familiar with the materials and understand the benefits and drawbacks of each. If you work in this industry or own a business that does, you should read on below. The benefits and cons of these machine materials will be discussed.
Concrete sandblasting can be divided into two categories; water-driven and dry.
The water-driven process is applied for reducing surface deterioration and so it is most commonly used in brick or concrete sandblasting. Abrasive particles are propelled by means of a pressurised liquid or a compressed gas during the course of this process.
Pros and cons of the process
This procedure has a number of advantages. The techniques abrasive materials have an aggressive action on the surfaces they come into contact with so sandblasting may remove impurities from hard surfaces, such as concrete, with its forceful action.
Abrasive blasting also does not necessitate the use of complicated machinery, however cleaning smooth surfaces using abrasive blasting is not recommended due to the abrasive media that is employed. Instead of concrete sandblasting, which is also a similar process for surface preparation, soda blasting can be used.
The abrasives used in the cleaning process are quite harsh. A regular application of this type of surface treatment would wear away the material’s finish and there are some health risks involved in using certain materials like silica. The high-velocity projecting of the particles causes a lot of heat to be generated, which can have a negative impact on both the human body and the surface on which it is applied.
There must also be a great deal of attention used during this process in order to avoid various kinds of risks. In addition, the operator must cover all of his or her body parts during the procedure.
The need to prepare the area
It is important to remember that this process is a dirty task, and you don’t want to overlook that fact before you start. So, it’s fine to begin the process of preparing and doing so in a way that minimises environmental impact.
Things that can’t be moved should be covered with tarps or blankets first. Cover any windows you plan to blast if you’re going to be doing it inside. Non-professional workers frequently make this blunder. To keep the impact area sealed, use tarpaulins, plastic sheets, or temporary skirts. Regardless of how much effort you put into hiding the items, cleaning is required after the process is completed. Always utilise environmentally friendly abrasive media. As previously said, sand is not a good idea.
Also, keep in mind that concrete sandblasting produces a significant amount of noise, keep this in mind when doing it.
Those who operate in this industry are exposed to significant levels of dust. Wearing protective gear, including an air filtration system containing clean compressed air, is necessary for them to avoid injury.
The typical dust mask and face shield won’t suffice in most circumstances. It is highly recommended that you use a specialised blasting helmet and air supply system. Typically, suits are constructed of canvas or leather, and some have a hood built in.