EARTHWORKS - DRAINAGE - SUBGRADE. REPORT FROM BRAZIL --PIARC XVIII WORLD ROAD CONGRESS, BRUSSELS, BELGIUM, SEPTEMBER 13-19, 1987

This report describes the Brazilian experience since 1975, examining the organization and new methodologies applied to geotechnical investigations. Research carried out at the Brazilian road research institute deals with the behaviour of an instrumented embankment built over a layer of soft clay of fluvio-marine origin. The stability of cuttings, embankment and natural slopes is examined using the "in-situ" saturation index, and moisture content. Attention is drawn to the need of establishing a geological/geotechnical inventory of slopes so as to be able to develop a "risk chart" with a view to preventing large landslides caused by rainfalls. As regards drainage, emphasis is placed on the necessity of keeping drains working efficiently by cleaning and maintaining them and by periodic improvement. Case studies are reported of the influence of drainage on the behaviour of structures built over sites with specific structural and mineralogical characteristics. For the covering abstracts of the congress see IRRD 812115 and 812116.

• Corporate Authors:

  Permanent International Assoc of Road Congresses

  27 rue Guenegaud
  Paris,   France 
• Authors:
  • Pinto, S
• Publication Date: 0

Language

• English

Media Info

• Pagination: p. 1-13
• Serial:
  • Publication of: PERMANENT INTERNATIONAL ASSOCIATION OF ROAD CONGRE
  • Issue Number: 0
  • Publisher: Permanent International Assoc of Road Congresses

Subject/Index Terms

• TRT Terms: Clay; Compressibility; Conferences; Cutting (Earthwork); Drainage; Embankments; Equipment; Hazards; Inventory; Landslides; Maintenance; Percent saturation; Pipe; Rain; Slope stability
• Uncontrolled Terms: Site investigation
• Geographic Terms: Brazil
• Subject Areas: Freight Transportation; Geotechnology; Hydraulics and Hydrology; Maintenance and Preservation;

Filing Info

• Accession Number: 00481208
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Apr 30 1989 12:00AM