The Balvac Vacuum impregnation process developed by Balfour Beatty uses an on-site vacuum seal over a crack in a concrete structure to facilitate a resin impregnant being introduced into the fissure. The resin seeps into the smallest crack and capillaries in concrete to form a permanent repair at significantly lower cost compared with pressure grouting methods in highway repair applications. The Balvac process has also been used in correcting subsided concrete slabs on airfields and motorways. In this process, the slabs are lifted by jacks while the void is grouted using the standard Balvac Vacuum procedure. The process is currently being employed in the restoration of bridges in the UK where frost damage has delaminated the stonework or concrete structures to a dangerous extent. (TRRL)

  • Availability:
  • Corporate Authors:

    Morgan-Grampian (Professional Press) Limited

    Morgan-Grampian House, Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • DONOVAN, P
  • Publication Date: 1980-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00330819
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Aug 15 1981 12:00AM