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January 28, 2020

 Road tunnels and technology in an operational perspective
Arild Petter Sovik, Tunntech Global News

Cavidrain pre-formed cavity drainage system

Written by  Oct 27, 2017

Cavidrain® is a preformed geocomposite drainage system designed to relieve water penetration and reduce hydrostatic pressure within tunnel constructions.

A satisfactory tunnel design anticipates drainage needs by managing the build up of hydrostatic pressure on the waterproofing layer and by transporting water away in the tunnel invert.

ABG Geosynthetics have developed a range of geocomposite drainage products specifically for tunnel drainage. The Cavidrain® range is a pre-formed cavity drainage system specifically designed to relieve the effects of water penetration from tunnels and is suitable for both remediation and new build. this drainage system can be used in both tunnel walls and tunnel invert drainage and has been specifically developed to provide a highly effective drainage system and mitigate the adverse effects of water on tunnel structures.

The Cavidrain® protector solution provides a free draining layer to collect infiltration water from behind tunnel linings as well as providing protection from physical damage. Cavidrain® Protector acts to minimise the build-up of hydrostatic pressure, thus protecting and enhancing the effectiveness of the waterproofing layer and provides significantly more drainage capacity than traditional geotextile fleece solutions.

Cavidrain® Liner is a combined drainage and waterproofing liner that is welded to form an integral waterproof system. The liner sheets are easily fixed to the smoothed excavated walll and the system is finished with shotcrete.

Weblink: http://www.abg-geosynthetics.com/market-sectors/tunnels.html 


Last modified on Saturday, 16 December 2017 12:16
Arild Petter Sovik

Editor, Tunntech Global News

E-mail:  arild.sovik@tunntech.no
Phone:  +47 950 88 793


News coverage based on many years of experience from key positions in the industry. Former National Tunnel Manager at the road authorities (NO), senior principal development manager at a major tunnel contractor company (NO) and experience from a wide number of activities in national and international networks. 


Website: www.sovikconsulting.no
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