Im Suedfeld 3 | 48308 Senden | Germany
Tel.: +49 (0) 2536 9939 0 | Fax: +49 (0) 2536 9939 20
Product range - if required - monitored and certified acc. above standards.
Contents such as technical specifications, values, and dimensions are given to the best of our knowledge, however, without any guarantee
and liability. If not specified otherwise, dimensions are given in millimetres. Our General Terms and Conditions shall apply.
CTS-SH (Geometry and dimensions)
Groove design:
Profile:
CTS-SH
The CTS-SH Seal is a compression profile in combination
with a hydrophilic insertion cord. In case of leakage
through the compressed seals caused by ring building
tolerances exceeding the maximum allowed joint gap sizes
the hydrophilic cord will start expanding over time.
An additional restoring force will be developed leading to
an additional sealing function resulting in a self-healing
effect over time.
The advantages
•
Highly efficient self-healing performance due to
hydrophilic round cords that are completely
embedded within the compression carrier profile
and in-between both compressed carrier profiles.
No loss of restoring force due to missing counter
force when the hydrophilic material moves out
towards the profile side flanks as often observed on
customary co-extruded composite seals with a thin
hydrophilic coating on the profile’s top-surface.
•
No premature swelling of the hydrophilic material
during outdoor storage of the segments and
therefore no protection measures against rain and
moisture required. The hydrophilic cord is installed
shortly before bringing the segments from the open
yard into the tunnel.
All CTS-SH seals are supplied as ready corner-vulcanized
and project specifically tailor-made gasket frames. The
profile geometry and also the procedures used for the
project-related water-proofing performance and restoring-
force-behavior testing follow the recommendations
of recognized institutions such as, e.g.:
STUVA (GER), AFTES (F), and BTS (UK).
The gasket installation
The CTS-SH seals are optionally installed either by “brush-
on” or “spray-on” gluing method. The CTS-Teco-Bond-
Gluing-System is recommended.
The installation of the hydrophilic cord Teco-Swell
is carried out shortly before bringing the segments into
the tunnel by using a special tool provided by CTS.
The tunnel segment installation
To obtain a proper seal, care must be taken to insure the
gaskets are not damaged during installation. For the
insertion of the key stone segment CTS recommends
using the CTS-Teco-Lube on the gasket frames.
The material
The CTS-SH Seal is made of a high quality EPDM com-
pound and its physical properties are in line with the
specified values found in the STUVA recommendations.
In case of special requirements concerning chemical resis-
tance when used in extremely contaminated ground CTS
offers alternative materials ( e.g. CR/SBR elastomer for
better resistance against hydrocarbons found in ground
water ).
This alternative material can be offered as a reasonable
compromise, but always under consideration of lowering
the typical and physical properties of an EPDM-compound
with regard to aging performance and longivety.
The hydrophilic round cord Teco-Swell is made of a swell-
able TPE material with good permanently elastic properties.
26 x 10 mm
33 x 10 mm
36 x 11 mm
44 x 12 mm