Shotblasting for heavy concrete surface profiling
Shotblasting is one of the common methods used, as a more aggressive profile and texture than concrete floor grinding and has been around for the past 100 years. Blastrac being the inventor of the first ever mobile shot blasting machine in the early 80’s now continues striving to build and manufacture effective profiling machines in the market today for Shotblasting.
The Blastrac shot blasting system are a mechanical process which is designed to remove up to 3mm of concrete surface contaminants, surface imperfections and coatings on concrete, stone or asphalt. The process is fully controlled, safe and environmentally sound. It uses no water, no chemicals or solvents, emits no pollutants or dust to the atmosphere and there removed material can often be fully recycled, this is what makes the shot blasting process an environmentally friendly technology.
Shotblasting is a common process used to prepare concrete flooring surfaces and areas in preparation to apply coatings, textured epoxies, membranes and other products which need a good bond or key.
Shotblasters take a steel shot which is fed by gravity through a control calve into an impellor. The impellor turning at high speed throws the steel shot through and adjustable opening at high velocity and at the specific angle on to the surface, over which the self-propelled machine is travelling.
The steel shot impacts the surface and bounces off, as it does so material from the surface whether this is contaminants, coatings or the surface material itself is abraded. Loose material together with the shot is drawn up into the machine by the airflow created by the vacuum unit.
Brush seals enclosed the last head to the surface and air is drawn in through and under the brushes from the surfaces to ensure no shot material from the blast head escapes into the atmosphere.
The debris and shot is drawn up into the separation chamber and by using a dual cyclone and magnetic separation process, the debris is drawn off to the dust collector and the shot is recycled back to the black head.
Shotblasters run a very precise operation and must be used carefully so not to over texture or prepare the surface prior to applying the concrete floor coating, epoxy or application process.
Accurate control of the shot blast pattern and the degree of removal or texture created is controlled using carious machine settings and operational practices. These include:
- Shot type
- Shot size
- Shot delivery control valve setting
- Impellor/ rotor speed
- Dust collector vacuum (airflow) settings
- Forward speed of machine
- Number and direction of passes
Let’s talk Concrete Surface Floor Preparation.
Here at All Preparation Equipment concrete floor preparation is what we live and breathe. Be it standing behind a Stand up Concrete Floor Grinder, changing diamonds on a grinding machine, commissioning a new shotblaster onsite, creating an effective dust control or concrete dust extraction system, we’re out to help make Tough Jobs Easy.
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