SHOTCRETE APPLICATIONS AND MINIMISING THE RISK OF DAMAGING ALKALI-AGGREGATE REACTION IN ROCK SUPPORT FOR A SUBSEA, GEOTHERMALLY ACTIVE ENVIRONMENT - HVALFJORDUR TUNNEL, ICELAND

The Hvalfjordur Tunnel is a subsea road tunnel constructed through basalt in lceland. The permanent rock support comprises predominantly mortar grouted rock bolts and sprayed concrete or shotcrete. Given the historical occurrence of alkali-silica reactivity identified in some Icelandic concrete the durability of the shotcrete used as permanent rock support at the Hvalfjordur Tunnel was of paramount importance. The prevailing conditions at the tunnel site of elevated water temperature and salinity provide a potentially highly aggressive environment for the shotcrete with damaging alkali-silica reactivity a major concern. This paper describes the measures taken to ensure that the potential for damaging alkali aggregate reaction in the shotcrete was minimised. For the covering abstract see IRRD E102185.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0727727869
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • RICHARDSON, D M
  • RAWLINGS, C G
  • GUDMUNDSSON, G
• Conference:
  • URBAN GROUND ENGINEERING. PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ORGANISED BY THE INSTITUTION OF CIVIL ENGINEERS AND HELD IN HONG KONG, CHINA, ON 11-12 NOVEMBER 1998
• Publication Date: 1999

Language

• English

Media Info

• Features: References;
• Pagination: p. 128-37

Subject/Index Terms

• TRT Terms: Aggregates; Alkali; Construction management; Corrosion; Shotcrete; Tunnels; Underwater construction; Underwater structures
• ITRD Terms: 4577: Aggregate; 7353: Alkali; 3666: Construction method; 5252: Corrosion; 4730: Shotcrete; 3374: Tunnel; 3626: Underwater
• Subject Areas: Bridges and other structures; Construction; Geotechnology;

Filing Info

• Accession Number: 00771451
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-7277-2786-9
• Files: ITRD
• Created Date: Nov 4 1999 12:00AM