Leiths Newsletter Issue 20 - Magazine - Page 5
CORPORATE / GROUP NEWS
ISSUE 19
RIGAflow Fibre Self
BLACKHILLS FOAM
Compacting Concrete SUPPRESSION SYSTEM
A new Crushing and Screening Plant
was recently installed at Blackhills
Quarry which included a containerised
foam suppression system to reduce
wind/airborne dust particles.
Foam is introduced in controlled measures directly into the crushers,
immediately prior to and after crushing, ensuring the material is fully
coated in foam. As the rock is crushed, new faces are exposed, and
dust particles are released. The dust particles collide with the foam
bubbles piercing them and releasing the moisture held therein. The
result being the dust particles become thoroughly wet and increase in
weight, causing them to fall back on to the main body of the material.
The wet dust particles continue their journey to the storage bins
without becoming airborne.
As part of this installation, 60 high pressure nozzles were installed
around the Crusher discharge points with a further six at the load out
conveyor where the aggregates are loaded into a dumper.
Dust Control Systems are an important factor when it comes to
meeting environmental and occupational health requirements. The
majority of dust in a quarry is created during both the extraction and
crushing processes. The difference following the commissioning of
the new system is evident and has been instrumental in reducing the
impact on the environment.
Leiths continue the development
of their enhanced performance
concretes with the recent launch
of their RIGAflow Fibre
self-compacting concrete.
Foam Spray
The RIGAflow Fibre is a self-compacting concrete which includes the
addition of a macro synthetic fibre, replacing the requirement for
traditional reinforcement in certain applications.
The use of RIGAflow Fibre Concrete can replace the need for traditional
mesh reinforcement on ground bearing slabs making this easier to place
than traditional concrete with mesh. The highly fluid concrete flows under
its own weight and maintains homogeneity while filling the formwork.
Because of the free-flowing properties and eliminating the need for mesh,
less labour is required due to the ease of concrete placement and site
preparation.
Using the RIGAflow Fibre will facilitate construction times and reduce
costs. Other advantages of the RIGAflow Fibre are that it’s safer to use
than steel, its corrosion free, and has significantly reduced carbon
emissions reducing the carbon footprint of the concrete.
5
