ADHESION OF WATERPROOFING ON CONCRETE BRIDGES. LITERATURE STUDIES

KLAEBNING AF FUGTISOLERING TIL BETONBROER. LITTERATURSTUDIER

A good adhesion to concrete is obtained if the initial wetting, spreading and adsorption of the adhesive is well achieved. Pores and other irregularities will be filled, So that a maximum of dipole-and hydrogen bonds will be established. Failure in the adhesive concrete interface is primarily the result of impurities, bad wetting, water or moisture. Loss of adhesion is due to the presence of impurities or voids, which increase in size, because of osmotic processes and water vapour pressure. This problem is particulary acute for bitumen based adhesives, where the active groups in bitumen are very sensitive to moisture. This means that the adhesive will have a tendency to separate from the concrete surface. It is possible to increase the strength of adhesion between adhesive and concrete surface 10-25 times if the bonding is established through chemical reaction with coupling agents such as silanes and titanates. Therefore, new opportunities exist so that in spite of imperfections, no damage will occur in the adhesive/concrete interface. Bitumen contains a relatively small amount of active groups, and the largest part of these are carboxylic. These groups have great affinity to coupling agents, so that even though they are more often used in combination with polymers, they might also function with bitumen based systems. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01095315
• Corporate Authors:

  Statens Vejlaboratorium

  Elisagaardsvej 5, Postbox 235
  Roskilde,   Denmark 
• Authors:
  • Worre, K
  • WOEHLK, C J
• Publication Date: 1988

Language

• Danish

Media Info

• Features: References;
• Pagination: 45 p.
• Serial:
  • Statems Vejlaboratorium Notat
  • Issue Number: 210
  • Publisher: Statens Vejlaboratorium
  • ISSN: 0109-5315

Subject/Index Terms

• TRT Terms: Adhesion; Binders; Bitumen; Bituminous materials; Bridge decks; Bridges; Chemical bond; Chemical reactions; Concrete; Failure; Moisture content; Pavement layers; Paving; Seal coats; State of the art reports; Surfacing; Waterproofing
• Uncontrolled Terms: Membranes
• Old TRIS Terms: Membranes (Biology)
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 00492851
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Part 1
• Files: ITRD, TRIS
• Created Date: May 31 1990 12:00AM