A concrete shot blasting machine is used to clean, polish, or roughen concrete surfaces. It works by propelling steel shots (small abrasive particles) at high speed onto the surface, which removes contaminants like dirt, old coatings, or rust.
How Concrete Shot Blasting Machine Work
Bestech walk-behind concrete shot blasting machines operate on a simple yet highly effective principle. These machines use abrasive materials propelled at high velocities to clean, strengthen, or polish surfaces. The abrasive material, often steel shots, is propelled onto the surface through a blasting wheel. This process not only removes contaminants but also profiles the surface, preparing it for coatings or overlays.
A concrete shot blasting machine is an industrial tool used to prepare concrete surfaces by cleaning, profiling, or finishing them. The machine uses a process known as shot blasting, where small steel balls or abrasive media (called “shots”) are propelled at high velocity onto the concrete surface.
Key Features:
Abrasive Media: The shot blasting machine typically uses steel shots, but it can also use other abrasives like grit or sand depending on the job.
Blast Wheel: The machine has rotating blast wheels that accelerate the shots toward the surface. These wheels are powered by electric motors.
Recovery System: After impacting the surface, the used shots are recovered by a vacuum or cyclone system, cleaned, and reused for further blasting.
Dust Extraction: Dust created during the blasting process is often collected by a dust collection system to ensure a clean and safe work environment.
Functions of Concrete Shot Blasting:
Surface Preparation: Shot blasting can remove old coatings, adhesives, rust, or contaminants from the surface. It’s commonly used before applying new coatings, sealers, or paints to ensure good adhesion.
Surface Profiling: The process roughens the concrete, making it more porous. This is especially important for ensuring that subsequent layers (such as epoxy coatings or sealers) bond effectively.
Cleaning: Shot blasting can also be used to clean heavily soiled concrete surfaces, removing dirt, grease, and oil.
Advantages:
Efficiency: Shot blasting is a fast method compared to other forms of abrasive blasting.
Environmentally Friendly: It produces less dust and is more controlled than sandblasting.
Reusability of Abrasives: The steel shots can be reused multiple times, making it cost-effective.
No Chemical Usage: It is a mechanical method that doesn’t require chemicals, which makes it safer for the environment.
Applications:
Floor Preparation: It’s often used in industrial settings to prepare concrete floors for coating or polishing.
- Cleans brick or stone
- Removes paint pavement markings from asphalt surfaces
Concrete Repair: Shot blasting can be used to clean and profile concrete before repair work.
- Prepares concrete for recoating or application of overlays.
- Removes markings, dirt and old coatings.
- Prepares parking lots and garage decks.
- Cleans factory and warehouse floors.
- Ideal for airport runways.
- Used on bridge decks, highways.
Rust Removal: It’s useful for cleaning rust from steel reinforcement bars or other metal parts embedded in concrete.
- Removes paint, rust, mill scale and marine growth
- Removes nonskid coatings
- Cleans ship and aircraft carrier decks
- Cleans offshore platforms
- Prepares petroleum and water storage
- Tank surfaces