USE OF WOVEN MATERIALS IN IMPROVED SUBGRADES

UTILISATION DES TEXTILES EN COUCHE DE FORME

The design of improved subgrades laid on soil of different consistencies, which are sensitive to frost and water gives rise to numerous problems. Five experimental sections were built by the laboratory in Nancy in which woven and non-woven materials were used. The aims were : (1) to verify the anti-pollution role of structural additional materials laid under a granular improved subgrade and on top of a saturated clayey soil; (2) to measure the influence of those added materials on the traffic behaviour and deformability of the underlying layer; (3) to define laying techniques, although the experiments applied only to special site conditions (clayey supporting soil with a low consistency at the surface, light traffic, use of granular material) and did not demonstrate the methods of use for each type of textile; two main results were observed: (a) in the short term, possibility of laying a granular improved subgrade on top of a clayey soil of low consistency, which results in a slight increase in compaction efficiency; (b) in the longer term, non-pollution of the improved subgrade and marked consolidation of the soil. /TRRL/

  • Corporate Authors:

    Laboratoire Central des Ponts et Chausees (LCPC)

    Boulevard Lefebvre 58
    Paris Cedex 15,   France  F-75732
  • Authors:
    • Douard, J Y
  • Publication Date: 1973-11-12

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00128695
  • Record Type: Publication
  • Source Agency: Central and Regional Labs of Bridges & Highways,Fr
  • Files: ITRD, TRIS
  • Created Date: Apr 7 1976 12:00AM