Technical Notes
A. Tschümperlin AG, Baustoffe
Baar
Key information
- Publication date:07 July 2025
- Workload:100%
- Contract type:Unlimited employment
- Place of work:Baar
Job summary
Explore the world of terrace slabs, Hermetik or vacuum? Discover opportunities for quality and strength.
Tasks
- Understand the differences between Hermetik and vacuum processes.
- Learn about the impact of slab thickness on production.
- Evaluate the qualities and applications of concrete slabs.
Skills
- No prior experience needed; just a willingness to learn.
- Basic understanding of concrete and production processes.
- Attention to detail and quality assessment.
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Terrace slabs: Hermetic or Vacuum?
Introduction are themselves unprocessed of very high
Hermetic is a word from antiquity
Quality and strength. and refers in a narrower sense to streams. The stream that is relevant for
slab thickness in slab production is- Over the years, attempts have been made to reduce
the slab thickness at the main pressing station of the hermetic press. With
the hermetic process, however, a certain minimum thickness is required to
be able to absorb excess water from the precast in
concrete terrace slabs. For many decades, the hermetic process has been used.
In the form of a press, a very wet
precast concrete (later visible side of the
slab) is first filled and then filled with
a very dry back concrete with a thickness of 2 cm. Both are then combined in the
hermetic process under a pressure of around twelve tons per cm.
During the pressing, the water exchange takes place from the wet precast concrete into the dry back concrete, resulting in a uniformly moist
concrete structure with high green strength.
Concrete quality
Whether produced in the hermetic or vacuum process has no influence on the
Green strength is the property of
the green concrete to be stable, as long as the surface quality is in the unprocessed state when vacuuming can be removed without changing the geometric shape. The green strength is then directly related to the stability of the concrete immediately after compaction. The slabs produced in this way are usually ground or blasted. If the surfaces are treated and the minimum thickness of the
T8I1
HAU PTSITZ Tschüm perlin AG, Baustoffe Oberneuhofstrasse 5 6341 Baar I Tel. 041 769 59 59 | CHE-384.723.301 MWST
E9S1
STANDO RTE Adliswil | Meierskappel/Küssnacht | Horw | Lüsslingen | Showroom Blegistrasse 5 6340 Baar/Sihlbrugg
ONLINE tschuem perlin-ag.ch shop.tschuem perlin-ag.ch info@ tschuem perlin-ag.ch
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Slabs are tailored to your application area, the positive properties are comparable.
Products meet the standard and thus provide a sufficient quality standard. The
Stamping processes effectively provided performance of the
Another possibility for producing concrete slabs lies in the classical stamping concrete process. Here, a damp precast concrete is introduced into the mold and subsequently filled with a
back concrete (core concrete) that has the same moisture content. This
aspect is important so that no different
surface tensions can arise during hydration (curing process). The compaction is performed using a stamping process applied at high speed.
Through the slight lateral movements, a better compaction of the structure is achieved. However, the density of the concrete structure cannot be compared to that of a
vacuum or hermetic process. Due to the higher
Vacuum blasted
Vacuum untreated
Capillarity, slabs produced with this process are only conditionally suitable for
use on balconies, terraces, and
loggias.
(see
Information sheet
AT_TD_Nutzschichten_Terrasse_Balkon)
Hermetic blasted
Hermetic untreated
Slab standard EN 1339
The production of concrete slabs is subject to the harmonized European standard 1339, which declares the performance to be met and the necessary testing procedures
Stamping concrete untreated. Although there are (as previously mentioned) differences in suitability
T8I1
HAU PTSITZ Tschüm perlin AG, Baustoffe Oberneuhofstrasse 5 6341 Baar I Tel. 041 769 59 59 | CHE-384.723.301 MWST
E9S1
STANDO RTE Adliswil | Meierskappel/Küssnacht | Horw | Lüsslingen | Showroom Blegistrasse 5 6340 Baar/Sihlbrugg
ONLINE tschuem perlin-ag.ch shop.tschuem perlin-ag.ch info@ tschuem perlin-ag.ch
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