BUILDING ON MINE SPOIL: NEW APPROACH USING DYNAMIC CONSOLIDATION AND PRESSUREMETER TESTING

A combination of two well-known techniques of soil testing and soil improvement was used on an experimental section to test its ability to improve and test recent mine spoils. These techniques are pressuremeter testing and Dynamic Consolidation. The mine spoil is composed of 100 ft (33 m) of shales, tills, and loesses that were transformed by weathering action into a silty clay matrix. This silty clay holds in its mass and extremely large number of limestone boulders. The spoil, 10-15 years old, exhibits poor engineering characteristics and has not yet reached its self-bearing level. Pressuremeter tests were performed at all stages of the work. The depth of the boreholes was generally 50 ft (15 m), and a test was performed every 3 ft (1 m) down. The pressuremeter probe was protected by a slotted steel casing. The Dynamic Consolidation was performed with light equipment in order to test the technique economically on the top 35 ft of the spoil. Two trial areas were compacted and results were compared with those of a 20-ft (6-m) high earth-fill load test. Results show that improvement due to the Dynamic Consolidation is dramatic and two to eight times larger than the improvement induced by the earth-fill load test. The analysis of the results enabled the determination of a program to improve the entire mass of the fill so it can be used as a good foundation to support heavy construction on shallow foundations. (Author)

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1983/897/897-006.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=BUILDING+ON+MINE+SPOIL%3A+NEW+APPROACH+USING+DYNAMIC+CONSOLIDATION+AND+PRESSUREMETER+TESTING&author=C.+Guyot&publication_year=1982
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309035090
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Earthwork Compaction. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Guyot, Christian
• Publication Date: 1982

Media Info

• Media Type: Print
• Features: Figures; Photos;
• Pagination: pp 34-37
• Monograph Title: Earthwork compaction
• Serial:
  • Transportation Research Record
  • Issue Number: 897
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Consolidations; Dynamic tests; Foundations; Limestone; Mat foundations; Mines; Pressure gages; Rock crystals; Soil tests; Spoil; Waste products (Materials)
• Old TRIS Terms: Single crystals
• Subject Areas: Construction; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00373026
• Record Type: Publication
• ISBN: 0309035090
• Files: TRIS, TRB
• Created Date: May 31 1983 12:00AM