Construction of the 13 km Leicester section of the M69 motorway is described. 1010 M of 11 M wide, three-lane carriageway was laid in one day. The design slab thickness was 265 mm. The subgrade materials are frost susceptible, requiring a total pavement thickness of 450 mm. The unreinforced slab incorporates two longitudinal joints, with transverse contraction joints at 5 M centres. Contraction joint innovations were the use of 400 mm long dowel bars and a modified support assembly in place of the 600 mm long bars originally called for, and use of a pvc sheath to prevent bonding over half the length of the dowel bars in place of conventional bituminous debonding compound. /TRRL/

  • Availability:
  • Corporate Authors:

    Department of the Environment

    Room 1640 Lunar House, 40 Wellesley Road
    Croydon CR9 2EL,   England 
  • Authors:
    • Hart, M
  • Publication Date: 1977-3


  • English

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 23
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00159759
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • ISBN: 0 11 724421
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Dec 27 1977 12:00AM