Shotcrete, in-situ concrete and lining segments
Sustainable and safe reinforcement
We let projects speak for themselves -
Case studies from the tunnel construction sector
Lining segments
The advantages of KrampeHarex fibres
Reinforcement with fibres from KrampeHarex copes with these load conditions better than conventional reinforcement in the form of tubbing segments does.
Faster stripping of the lining segments
The tubbing segments can be stripped after just 6 hours. This increases production performance.
Space-saving storage
As the fibres are uniformly distributed in the components, up to 7 tubbing segments can be stacked on top of each other without any risk of breakage.
Transport with less damage
Thanks to the uniform distribution of the fibres, the tubbing segments are also more stable against vibration and impact shocks during transport.
High stability during installation
When installing with the aid of a tunnelling machine, high loads act on the components. Here too, the stability of fibre concrete is an advantage.
Extremely rugged
After installation, a wide variety of forces act on the tubbing segments. This is where fibre concrete proves to be extremely durable and resilient.
Fire protection in tunnels
A hot topic
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Preventive fire protection has gained in importance in tunnel construction. New concepts demand that the concrete itself has a protective effect. This is made possible by adding synthetic fibres, because these reduce or prevent explosive concrete spalling.
Our polypropylene fibres are the result of many years of research and development. Their fire protection properties have been tested in collaboration with institutes like the Leipzig Institute for Materials Research and Testing (MPFA Leipzig GmbH), and the fibres have already been used in pilot projects like the Leipzig City Tunnel.
without PP fibres
with PP fibres from KrampeHarex
Fibres and dosing technology
from a single source
Dosing and conveying technology
In the field of dosing and conveying technology, we offer tailor-made solutions for precise and efficient processing of PP and steel fibres. Our range includes conveyor belts, blow-in devices and automatic dosing systems that guarantee maximum accuracy and reliability.
In addition to standardized systems, we also develop special solutions that are individually tailored to your requirements. We take care of the professional installation and commissioning on site and ensure optimum dosing settings so that your processes run smoothly and efficiently.
Fast. Reliable. Worldwide.
We make scheduling easy for you and offer customs clearance as well as route planning. Fast, reliable, just in time on request and sometimes even to the furthest corners of the earth. Always in focus: resource-saving procurement of raw materials and sustainable delivery to our customers!
Smart and safe
The packaging solutions can be as individual as your project. From 6 kg bags to 20 kg cartons to 1 t big bags - we make everything possible. The handling, safety and sustainability of the packaging are our top priority. And, thanks to the new packaging system, packed in no time at all.
Find the right fibre for tunnel constructions
The KrampeHarex Fibrefinder
Do you have questions
about our fibres?
Contact us!
Your direct line
to KrampeHarex
Christian Braun
Projectmanagement Tunnel construction & Mining
