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Concrete Crushing

The process of concrete crushing can be subdivided into two categories: mechanical and chemical.

Mechanical Concrete Crushing

Hydraulic and power breakers are typically used for this work. Usually, due to efficiency and operability considerations, hydraulic breakers are mounted on diesel-engine units (BOBCAT S250H) or battery-powered units (BROKK 90 and BROKK 260). Mechanical concrete breaking may also involve the use of special crushing jaws mounted on demolition machines, or mobile hydraulic and mechanical crushers powered by diesel engines or batteries.


BROKK 260

BROKK 90

Bobcat

Chemical Concrete Crushing

This technology uses special non-explosive ("silent") chemicals which, after being properly prepared, are poured into holes pre-drilled in the material to be broken.

As a result of crystallisation, the poured mass increases its volume (up to 6 times), resulting in longitudinal and shear forces, causing numerous cracks and separation of the material's structure.

The effectiveness and flexibility of the method proves invaluable whenever mechanical breaking cannot be used – it is in general more invasive and harmful to the environment because of the noise and dust it generates.

For chemical concrete breaking, we use such solutions as Cevamit. It is a non-explosive expanding material used for breaking concrete, stone, reinforced concrete, rock, brick and other non-elastic materials.

The use of the expanding agent causes no nuisance to the environment and residents.

Cevamit is mixed with water and poured into boreholes in the material to be broken. After a few hours the agent expands, causing stress of up to 50 MPa in pressure.

 

MARICO f.p. Cezary Zakrzewski
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DIAMOND TECHNOLOGIES
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e-mail: marico@marico.net.pl