LEAKAGE OF CHEMICALS FROM TWO GROUTING AGENTS USED IN TUNNEL CONSTRUCTION IN NORWAY: MONITORING RESULTS FROM THE TUNNEL ROMERIKSPORTEN

Chemical grouting agents are used to reduce water leakages encountered in tunnel constructions. The object of the work presented in this paper was to study the leakage pattern and the amounts of substances released during use of two different grouting agents. The acrylate-based grouting agent MEYCO MP 307 and the isocyanate-based product TACSS NF/020 were used in the construction of the tunnel Romeriksporten, Norway, in 1998-1999. Drainage water from the tunnel was monitored with respect to the chemicals expected to pose the highest environmental risk. A total of 62 tons of MEYCO and 80 tons of TACSS were used during the monitoring period. The proportion of the products that appeared in the drainage water was estimated from monitoring data, data on water transport out of the tunnel, and the recorded amounts of grouting agents used. Average leakages of acrylic acid, methacrylic acid, and 2-hydroxyethyl methacrylate were estimated to be 1..2%, 0.6% and 0.5% (w/w), respectively, of the total amount of MEYCO used. Average leakages of di-n-butyl phthalate and hexadecyl dimethyl amide were estimated to be 0.16% and less than 0.003% (w/w), respectively, of the total amount of TACSS used. The results of the study showed that the use of grouting products in tunnel construction might lead to relatively large local releases of chemicals into the (aquatic) environment. However, the use of effluent monitoring and proper risk management strategies can keep the risk for environmental effects within acceptable limits. (A)

• Availability:
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• Corporate Authors:

  American Chemical Society

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  Washington, DC  United States  20036
• Authors:
  • SVERDRUP, L E
  • KELLEY, A E
  • WEIDEBORG, M
  • OEDEGAARD, K E
  • VIK, E A
• Publication Date: 2000-5-15

Language

• English

Media Info

• Features: References;
• Pagination: p. 1914-8
• Serial:
  • Environmental Science & Technology
  • Volume: 34
  • Issue Number: 10
  • Publisher: American Chemical Society
  • ISSN: 0013-936X
  • EISSN: 1520-5851
  • Serial URL: http://pubs.acs.org/journal/esthag

Subject/Index Terms

• TRT Terms: Chemical analysis; Grout; Pollution; Tunnels; Water
• Uncontrolled Terms: Injection (Materials)
• ITRD Terms: 7163: Chemical analysis; 4729: Grout; 3617: Injection (mater); 2453: Pollution; 3374: Tunnel; 4355: Water
• Subject Areas: Bridges and other structures; Environment; Materials;

Filing Info

• Accession Number: 00795026
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Jul 7 2000 12:00AM