Within a large renovation process of some areas
in the main bath hall, the inside pool has been
renewed, too. A new highlight has been designed
with a cave in the shape of a salt crystal made
with LUCEM translucent concrete, allowing
the new shell to light in different colours along
with the water. This ambient lighting concept,
along with a special sound system in the Cave
integrated with the massage jet nozzles in the
water, creates a wellness feeling for everybody
inside this installation. The light shines through
the surface of the translucent concrete with
more than 2 million fiber optics.
With the new light transmitting
concrete salt crystals LUCEM
presents a unique world’s first
design object. The impressive result
shows how fascinating public pools
can be designed today.
The former design of the interior pool included
a cave made of natural stone and covered with
artificial palms. This design was very popular
over decades, therefore, the new design had to be
a very special and an impressive one.
As part of the modernization of the baths, the
cave should visually pick up and become a
stylized salt crystal, self-illuminating and bright
inside-out.
The architectural firm Krieger Architekten
Ingenieure GmbH from the city of Velbert/
Germany, saw in the light transmitting concrete
a perfect material for this use. Translucent
concrete is a very elegant and visually appealing
material, with the ability to transmit the light
behind through thousands of fiber optics
embedded within the panels. As a result,
the panels look in one moment like a heavy
grounded natural stone and when lit, they shine
and glow and look like a hovering light material.
The duality of this material gives different
ambiance for the space, use and users.
The project manager of Krieger Architekten
Ingenieure, Arch. Sonja Baumeister, and her team
completely renewed a 170 m² large pool with
underwater-jets, a waterfall and a channel as a
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