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Tunnel wall and arch renovation - Tal-Tunnel - Herisau, Switzerland
Static retrofitting (dry-spray method) used in tunneling and general construction
Tunnel wall and arch renovation - Tal-Tunnel - Herisau, Switzerland
- Topic
- Tunnel wall and arch renovation
- Object
- Tal-Tunnel
- City
- Herisau
- State
- Aargau
- Country
- Switzerland
- Date
- 2011
- Duration
- 2 Months
Situation
Due to long-term strain on the construction, the Tal tunnel was in need of renovation. In the process, the tunnel walls and arched ceiling were simultaneously renovated and reinforced with the S&P ARMO system. This was the most economical solution that would satisfy the requirements regarding the clearance gauge of modern rolling stock.
Solution
The concrete substrate was cleaned and in damaged places grinded down using high pressure water jets. The first layer of ARMO-crete d with a thickness of 4 cm was then applied. In the next work stage, the S&P ARMO-mesh 200/200 was fixed onto the shotcrete using rust-free staples and a pneumatic staple gun. The reinforcement mesh was finally covered with another 4 cm-thick layer of S&P ARMO-crete d.
Materials and methods were inspected closely through various tests on the structure itself and in the laboratory.
Material
approx. 200 tons of S&P ARMO-crete d and 1600 m2 S&P ARMO–mesh 200/200
Image Gallery
Applying the first layer of ARMO-crete d
Mounting the ARMO-mesh 200/200 onto the shotcrete
Tunnel after the completion of the renovation and reinforcement measures
Service
Contact person
S&P Clever Reinforcement Company AG Headquarters
S&P Clever Reinforcement Company AG Headquarters
- Phone
- +41 41 825 00 70
- info@sp-reinforcement.ch
- Location
Case Study
-
Tunnel wall and arch renovation with S&P ARMO-System (ARMO 2011_02)
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