USE OF NON-WOVEN FABRICS IN PERMANENT ROAD PAVEMENTS

Following a review of the uses for man-made fabrics in road construction, the results are presented of an experimental investigation into their possible structural role in permanent asphalt pavements. While beneficial effects, in terms of structural performance, have been reported for temporary pavements incorporating fabrics, no direct structural advantage was apparent in the low deformation conditions in permanent roads. The experiments involved seven pairs of pavements tested in the University of Nottingham's pavement test facility. One in each pair incorporated a layer of non-woven fabric at formation level so that direct comparisons of performance could be obtained. Measurements of in situ stress and strain, together with surface permanent deformation, were obtained during each test which involved application of up to 100000 wheel passes. Detailed data is presented on the states of compaction and moisture content for the silty-clay subgrade and the crushed limestone base materials together with compaction and analysis results for the rolled asphalt surfacing. Each pavement comprised about 50 mm of asphalt over 150 mm of crushed stone over the subgrade in which the CBR varied between 2% and 8%. It was concluded that fabrics are useful in permanent roads as a construction expedient, as a separator of subgrade from sub-base, but that no direct reinforcing action is obtainable. (Author/TRRL)

• Corporate Authors:

  Institution of Civil Engineers

  One Great George Street, Westminster
  London,   United Kingdom  SW1P 3AA
• Authors:
  • BROWN, S F
  • Jones, CPD
  • Brodrick, B V
• Conference:
  • Institution of Civil Engineers, Proceedings, Pt2
• Publication Date: 1982-9

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 541-563
• Serial:
  • Volume: 73
  • Issue Number: PT2

Subject/Index Terms

• TRT Terms: California bearing ratio; Clay; Compaction; Crushed limestone; Deflection; Deformation; Durability; Flexible pavements; Moisture content; Nonwoven materials; Nonwoven textiles; Pavement design; Pavements; Road construction; Silts; Soil compaction; Stresses; Subgrade (Pavements); Tests
• Uncontrolled Terms: Membranes
• Old TRIS Terms: Highway pavement; In situ stresses; Membranes (Biology); Pavement deflection
• ITRD Terms: 5904: Compaction (state of); 5595: Deformation; 5910: Durability; 2944: Flexible pavement; 4525: Membrane; 4558: Nonwoven material; 3055: Pavement design; 3665: Road construction; 5575: Stress (in material); 6255: Test
• Subject Areas: Design; Geotechnology; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00368806
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jan 31 1983 12:00AM