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Datum Waterproof


									News Release
                                                                                            31st January 2011
Designer Workshop                                                                           Pressrealese 001/2011
Trondheim (N), 15th – 16 March 2011                                                         Karl Gunnar Holter

Permanent waterproof single-shell tunnel
lining based on sprayed concrete and
                                                                                            BASF Construction Chemicals Europe Ltd
                                                                                            Vulkanstrasse 110
                                                                                            8048 Zurich, Switzerland
double-bonded waterproofing membrane
                                                                                            Phone +41 79 669 64 22
BASF has announced a workshop for Waterproofing Designers to learn more           
about the company’s MEYCO Underground Construction solutions. The                
                                                th     th
workshop, to be held in Trondheim, Norway, 15 – 16 March 2011, will cover
permanent waterproof single-shell tunnel lining solutions using sprayed concrete
and double-bonded waterproofing membrane MASTERSEAL 345.                         

One of the event’s highlights is a site visit to a tunnel just outside Trondheim to see a
large ongoing application of MASTERSEAL 345 in action.

The workshop is aimed at designers, engineering consultants and owners within
underground construction and will be useful to all engineering personnel involved in
the waterproofing design and permanent support of underground structures.

The workshop’s key topics are:

   Understanding how sprayed concrete and a double-bonded spray-applied
    waterproofing membrane function together in a monolithic structure, creating a
    composite waterproof lining
   Design issues for the system in different situations
   Current experience and understanding of the system in cold climate conditions
   How this technique is being implemented at the Gevingas rail tunnel project

Said Karl Gunnar Holter, Technical Manager at BASF for MEYCO Underground
Construction solutions in Europe: “This innovative, cost-effective method for tunnel
waterproofing has shown significant project savings over the double-shell method on
recent projects. We want to demonstrate the advantages of a bonded waterproofing
membrane as this design concept can resolve technical problems that have proved
difficult to combat with conventional sheet membranes.”

He explained: “In brief, the bonded membrane prevents migration of water along the
concrete–membrane interfaces on either side of the membrane, and the tensile
bonding and shear strengths of the combined concrete and membrane give the
mechanical behavior of a composite structure. This means that the primary support
lining and the inner final lining act together and can be considered as part of the
permanent support structure.
“Both primary lining and secondary lining, together with the bonded membrane, can
be designed to offer a permanent, long-term, durable and waterproof tunnel lining.”

The MASTERSEAL spray-applied system is ideally suited to underground structures with complex geometries,
such as lay-by niches, cross passages, turnouts and crossover caverns.

News Release
To register for the workshop, contact your local BASF representative for MEYCO solutions. More information is
available from or visit the MEYCO solutions website at .

About the Construction Chemicals division
BASF’s Construction Chemicals division is the leading supplier of chemical systems and formulations for the construction
industry. Continuous innovation and tailor-made solutions ensure its customers are more successful. In the MEYCO

Underground Construction unit, international tunneling and mining specialists work closely with contractors, design engineers
and mining houses around the globe. They permit the seamless transfer of their state-of-the-art MEYCO technology and
services with complete packages that solve all underground engineering problems, safely and cost and time effectively:
Expanding Horizons Underground.
The division operates production sites and sales centers in more than 50 countries and achieved sales of about €2 billion with
approximately 7,100 employees in 2009.

About BASF
BASF is the world’s leading chemical company: The Chemical Company. Its portfolio ranges from chemicals, plastics and
performance products to agricultural products, fine chemicals and oil and gas. As a reliable partner BASF creates chemistry to
help its customers in virtually all industries to be more successful. With its high-value products and intelligent solutions, BASF
plays an important role in finding answers to global challenges such as climate protection, energy efficiency, nutrition and
mobility. BASF posted sales of more than €50 billion in 2009 and had approximately 105,000 employees as of the end of the
year. Further information on BASF is available on the Internet at

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