Title:
Influence of Curing on Precast Tunnel Lining Segments
Author(s):
Martin Brugger
Publication:
Concrete International
Volume:
16
Issue:
7
Appears on pages(s):
51-54
Keywords:
atmospheric pressure steam curing; highways; humidity; precast concrete; steam curing; temperature; tunnel linings; Materials Research
DOI:
Date:
7/1/1994
Abstract:
The Boezberg highway tunnel between Zurich and Basel in Switzerland was excavated with a large, full-face tunnel boring machine (TBM) between 1990 and 1993. Thirty-thousand reinforced concrete segments of 7 to 8 Mg (15,000 to 18,000 lb) each were required for the outer lining of the twin tube, which had an excavation diameter of 11.8 m (39 ft) and a total length of 7.4 km (4.6 mi). The segments were steam cured at low (atmospheric) pressure.