EXPERIMENTAL TREATMENT OF AN OLD TRACK-BED USING CIPS

CIPS is a process whereby calcium carbonate is precipitated from an aqueous solution within the pores of a soil or rock. The carbonate forms bridges at the contacts between the particles of a granular material, stiffening and strengthening the material without reducing permeability significantly. Its application to the treatment of the ash fill which is present in the slopes of many London Underground embankments has resulted in a substantial gain in strength and stiffness. A further trial of CIPS was carried out in 2001 on a full-scale old track bed on a clay embankment, with ash fill overlain by old contaminated ('spent') limestone ballast. CIPS was able to cement and stabilise the contaminated ballast and ash. The treatment trial was more than 100m away from the mixing point. Treatment fluids were delivered by hoses and sprayed on the surface, without a need for vehicle access. This innovative technique offers significant advantages over existing methods of track bed remediation. The results obtained were monitored by geophysics during treatment and by the Falling Weight Deflectometer (FWD) before and after treatment. Substantial improvements in track stiffness and quality were measured with implications for track maintenance and renewal. For the covering abstract see ITRD E122683.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0947644490
• Corporate Authors:

  ENGINEERING TECHNICS PRESS

  46 CLUNY GARDENS
  EDINBURGH,   United Kingdom  EH10 6BN
• Authors:
  • VAUGHAN, P R
  • KUCHARSKI, E S
  • CHOW, F C
  • ARMITAGE, R
  • OKUNDI, E
  • FITCH, T R
• Publication Date: 2002

Language

• English

Media Info

• Features: References;
• Pagination: 17 p.
• Monograph Title: THE MOVEMENT MONITORING OF A RAILWAY LINE - CTRL 440 - A CASE STUDY
• Serial:
  • PROCEEDINGS OF THE INTERNATIONAL CONFERENCE RAILWAY ENGINEERING 2002, HELD LONDON, UK, JULY 2002 - CD ROM
  • Publisher: ENGINEERING TECHNICS PRESS

Subject/Index Terms

• TRT Terms: Ballast (Railroads); Calcium; Carbonates; Clay; Conferences; Earthwork; Embankments; Fly ash; Limestone; Material reinforcement; Quality control; Railroad tracks; Reinforcing materials; Soil mechanics; Stiffness
• Uncontrolled Terms: Ballast; Quality
• ITRD Terms: 7178: Calcium; 7312: Carbonate; 4177: Clay; 4559: Coarse aggregate; 8525: Conference; 3653: Earthworks; 2801: Embankment; 4580: Fly ash; 4131: Limestone; 9063: Quality; 1062: Railway track; 3471: Reinforcement (in mater); 5755: Soil mechanics; 5931: Stiffness
• Subject Areas: Geotechnology; Railroads;

Filing Info

• Accession Number: 00982643
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-947644-49-0
• Files: ITRD
• Created Date: Dec 2 2004 12:00AM