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Prestressed Concrete Sleepers : Sustaining Railway Traffic Leonhard Moll Betonwerke

Prestressed Concrete Sleepers : Sustaining Railway Traffic Leonhard Moll Betonwerke. Gauge 1.435 mm load transmission 22,5 to. Historical construction materials. Railway History set up the initial needs. wood. steel. vertical loads resulting from train weight.

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Prestressed Concrete Sleepers : Sustaining Railway Traffic Leonhard Moll Betonwerke

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  1. PrestressedConcreteSleepers: SustainingRailway Traffic Leonhard Moll Betonwerke

  2. Gauge 1.435 mm • load transmission 22,5 to. Historical construction materials Railway History set up the initial needs wood steel

  3. vertical loads resulting from train weight lateral loads resulting from sinusodial run Requirements for sleepers: compressive strength form stability bending tensile strength wood: ok steel: ok concrete: ?

  4. to hinder product failure through poor tensile strength Joseph Monier invented armed concrete in 1867 Concrete has the initial quality of compressive strength span concrete, starting in the late 1920-ies, improved concrete as construction material for dynamic loads

  5. The prestressed concrete sleeper established in the early 1950-ies

  6. mostly are prescribed by their production process Longline Carrousel pretensioned post tensioned instant demolding late demolding Span systems for concrete sleepers or

  7. 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 EN 13.230 (1-5) for concrete sleepers 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. Thosti (Thormann & Stiefel)

  9. DSA (Dyckerhoff Span Anchor)

  10. Longline

  11. Wayss & Freytag

  12. 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 What can help, finding a long lasting concrete sleeper for your railtrack? • seek after experience in technical or operational divisions of other countries with notable history

  13. Leonhard Moll Betonwerkereliable since 1929 Thankyouforyourattention Leonhard Moll Betonwerke GmbH & Co KG Lindwurmstr. 129a, D-80337 Munich info@moll-betonwerke.de

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