Understanding the Pakistan Budgeting Process: Basics and Key Insights
South East Europe Rail conference - Christian Kilger
1. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
Prestressed Concrete Sleepers:
Sustaining Railway Traffic
Leonhard Moll Betonwerke
Christian Kilger
5 June 2013, Belgrade/Serbia
2. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
Railway History
set up the initial needs
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
Historical construction materials
• Gauge 1.435 mm
• load transmission 22,5 to.
steelwood
3. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
Requirements for sleepers:
• compressive strength
• form stability
• bending tensile strength
lateral loads resulting
from sinusodial run
vertical loads
resulting from
train weight
wood: ok
steel: ok
concrete: ?
4. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
Concrete
has the initial quality of
compressive strength
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
to hinder product failure
through poor tensile strength
Joseph Monier invented
armed concrete in 1867
span concrete, starting in the
late 1920-ies, improved
concrete as construction
material for dynamic loads
5. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
The prestressed concrete sleeper
established in the early 1950-ies
6. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
Span systems for concrete sleepers
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
Longline Carrousel
instant demolding
post tensioned
mostly are prescribed by their production process
pretensioned
late demolding
or
7. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
EN 13.230 (1-5) for concrete sleepers
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
were established between 1995 and 2003
at this time all production systems have been
already working according national norms
therefore it could be nothing else than the
least common denominator
and it even delegates the most relevant definition of
the nominal or testing loads to the buyer
EN 13.230 deals with other norms, dimensions,
curing, impact coefficients and product testing, a
part 6 dealing with construction principles may
follow some day
8. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
Thosti (Thormann & Stiefel)
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
9. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
DSA (Dyckerhoff Span Anchor)
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
10. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
Longline
12. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
What can help, finding a long lasting
concrete sleeper for your railtrack?
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
• end anchors secure the initial prestressing force
in the sleeper for a long product life
• supplier history is important – particularly if the
buyer is caught in a short term warranty period
• seek after experience in technical or operational
divisions of other countries with notable history
13. Leonhard Moll Betonwerke
Ein Unternehmen der Leonhard Moll AG
Thank you for your attention
Leonhard Moll Betonwerke
reliable since 1929
Leonhard Moll Betonwerke GmbH & Co KG
Lindwurmstr. 129a, D-80337 Munich
info@moll-betonwerke.de
SOUTH EAST EUROPE RAIL
& PUBLIC TRANSPORT DEVELOPMENT
5 June 2013, Belgrade/Serbia
