Easy-To-Clean Surface

The principle of this concept is taken from nature. Certain plants have very good self cleaning properties by combining a micro structured surface, which is coated with a hydrophobic agent. This is referred to as Lotus Leaf effect. The Lotus Leaf effect is based on super hydrophobicity  (Fig.), which enables plants to clean themselves from dust particles.

principle-water-repellency-landscape

Within SESBE a similar approach was chosen to functionalize the concrete surface towards easy-to-clean properties.

The approach was to imprint a fabric structure into the concrete’s surface. The water repellency was then created by a hydrophobic agent, which is mixed into the concrete.

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Fabric.
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Concrete with textile imprint.

 

 

 

 

 

 

The following pictures show the beading effect of water, once it is in contact with the water repellent surface.

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Hyrdophob concrete surface.
Hydrophobic concrete surface with fabric imprint.