WATERPROOFING OF ENGINEERING STRUCTURES

IMPERMEABILIZACION DE OBRAS DE FABRICA

Increased interest has been taken in recent years in the problem of the impermeability of bridges. The problem arises from the development of the road network and from more widespread use of lightweight structures of prestressed or post-tensioned concrete, where protection against water is necessary to ensure good maintenance of the structure. There are three reasons why it is necessary to make the decks of bridges impermeable: (1) the problem of the strength of the material, (2) the right material which constitutes the deck, (3) external agents. An impermeable course should present the following characteristics: (A) maximum adaptability to surface irregularities, (B) high tensile strength, (C) maintenance of visco-elastic properties at low temperatures, (D) possibility of applying a layer of desired thickness with a suitable technique, (E) resistance to ageing. Current methods of achieving impermeability are analyzed, stressing the most important: (1) asphalt membrane, (2) systems of bitumen-rubber, (3) systems with a pitch-epoxy base. The advantages and disadvantages of each system are analyzed. /TRRL/

  • Corporate Authors:

    Portavoz de la Agrapacion Nacional de Fabricantes

    Seccion Publicidad, Quinones 15-1
    Madrid 8,   Spain 
  • Authors:
    • GORDILLO, J
  • Publication Date: 1976-4

Language

  • Spanish

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 23-27
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00182676
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 3 1978 12:00AM