INVESTIGATION OF ROAD WIDENING ON SOFT SOILS USING A SMALL CENTRIFUGE

Increasing traffic in the Netherlands increases the demand for roads to be widened. In several cases the sand body of the roads is founded on soft soils. To widen these roads, the width of the sand body has to be increased. The widening process can cause cracks in the asphalt layer of the original road, which has to be prevented as much as possible. To investigate the effect of different methods of road widening, a test program was carried out in the small geotechnical centrifuge of the University of Delft. Two different methods of widening were simulated: the horizontal method and the gap method. The excess pore water pressure was taken into account, and the deformation of the clay layer and sand body was measured by means of image processing. Although the differences in deformations measured were small, it could be seen clearly that the horizontal widening method caused more horizontal displacements than the gap method. This indicates that cracking of the asphalt layer could be minimized by using the gap method of construction.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1994/1462/1462-006.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=INVESTIGATION+OF+ROAD+WIDENING+ON+SOFT+SOILS+USING+A+SMALL+CENTRIFUGE&author=H.+Allersma&author=L.+Ravenswaay&author=E.+Vos&publication_year=1994
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• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1462, Compaction of Difficult Soils and Resilient Modulus Testing. 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:
  • Allersma, HGB
  • Ravenswaay, L
  • Vos, E
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 47-53
• Monograph Title: Compaction of Difficult Soils and Resilient Modulus Testing
• Serial:
  • Transportation Research Record
  • Issue Number: 1462
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Centrifuges; Construction management; Deformation; Geotechnical engineering; Image processing; Laboratory studies; Pavement widening; Pore water pressures; Simulation; Soft soils
• Subject Areas: Construction; Geotechnology; Highways; I42: Soil Mechanics; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00677578
• Record Type: Publication
• ISBN: 0309060680
• Files: TRIS, TRB
• Created Date: May 3 1995 12:00AM