June 7-10, 2009
The last few years, several projects have been successfully lined by sprayed concrete with an embedded double-bonded spray-applied membrane. This composite single shell liner offers significant reduction of total project cost and construction time. Especially in drill and blast tunneling major cost savings are linked to reduced consumption of concrete materials when comparing with the traditional system with sheet membrane and cast in-situ concrete.
Knut F. Garshol, "COST EFFICIENT WATERPROOF TUNNEL LININGS" in "Shotcrete for Underground Support XI", Felix Amberg, M.o.S. ETHZ, SIA, Switzerland; Knut F Garshol, BASF Construction Chemicals, LLF, USA Eds, ECI Symposium Series, (2009). http://dc.engconfintl.org/shotcrete/4