To refurbish a tunnel seal requires a great deal of technical effort and massive financial investment. To prevent
this occurring, it is sensible to select products and sealing systems that will ensure long-term effectiveness.
Carbofol® geomembranes for tunnel construction Geosynthetic materials manufactured from polyethylene (PE), which is highly resistant to chemicals and ecologically safe to the environment, meet highest requirements.
Carbofol® tunnel geomembranes consist of PE-VLD (polyethylene – very low density) or PELLD (polyethylene – linear low density). Due to the careful resin selection, Carbofol® tunnel geomembranes are highly flexible and free from plasticizer.
A long-term, trouble-free tunnel operation with low operating and maintenance costs can be achieved with a professionally installed sealing system. In addition, a tunnel’s sealing system will actively contribute to environmental protection, despite the need for the construction of the tunnel, by avoiding interference with the mountain’s hydrological water balance. The sealing system will also prevent environmental damage from oils or chemicals which may occur due to traffic accidents.
Each tunnel requires a specific solution; depending on construction details, such as cut and cover construction projects, varying water aggressiveness, transition sections of in-situ water under pressure and seepage water.
The selection of materials depends mainly on the expected service life of the tunnel and the composition of the surrounding mountain water and ground water. The sealing elements should be flexible enough that when the concrete inner shell is being poured, it adjusts over the entire surface of the sealing carrier layer. The stresses resulting from the construction process and operation must be absorbed without any exceptions. National requirements for the geomembrane must be taken into account and it should be possible to process the material in a safe and sensible manner.
For more information please refer to the Technical Documents located on the right.
DrainTube approved by FIFA for synthetic soccer fields
DRAINTUBE™ is a horizontal drainage solution that provides all the benefits of a drain as well as the cushioning effect of a geotextile - all in one installation. The system comprises perforated...Read More
Armormax®, the Sustainable Engineering Solution for Slope Stability and Erosion Control
Almost all sliding of soil masses are due to the combination of increased shear stress acting on the soil, along with reduced shear strength of the soil itself. Identifying the sole reason...Read More
Webinar Q & A Transcript – Lessons learnt from geogrid reinforced wall failures
1. Does the geogrid/reinforcement installation increases the safety factor. If yes, by how much will it be increased? Yes geogrid increases Factor of Safety (FOS). Reinforcement length is very...Read More
Applications for Pyramat® 25
An ideal solution to help prevent scour. What is PyramatⓇ 25? Pyramat® 25 is a High-Performance Turf Reinforcement Mats (HPTRM) that offers a permanent engineered solution against erosion,...Read More