Selection guide
Road bridges

The waterproofing of bridge-decks is necessary to enhance the durability and longevity of road bridges. It prevents penetration of corrosive agents such as water, polluted air, carbon dioxide and de-icing salts that can oxidize the steel reinforcements in the concrete thus causing structural damage and compromising the sturdiness of the whole structure. Siplast offers bituminous top quality membranes that are bonded to the bridge deck, applied by manual or machine torching.

Road new works and renovation, whether the structure or the base slabs are of reinforced concrete or of pre-stressed concrete.

Performance requirements
  • Great adherence on the deck.
  • Mechanical strength: elongation, resistance to breaking and to puncturing.
  • Resistance to aggressive agents.
  • Low sensitivity to ageing.
  • The total waterproofing qualities of all parts of the substrate and a reliable link to all the details and connections are necessary and the membrane must provide a continuity of waterproofing over the whole structure.

The prefabricated membranes combine the advantages of traditional materials like bituminous binders with the advantages of modern materials, in particular, polymers and geotextiles.

The Siplast product range:
- Parafor Ponts can directly receive a tar macadam wearing course.
- Paraforix: the roadway is built under a fine gravel filled asphalt waterproofing protection.
- Teranap 431 TP (geomembrane) waterproofs masonry or concrete vault bridges as well as the extradoses of underground structures.

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