CONSEQUENCES OF CRACKING IN A CEMENT STABILIZED ROADBASE FOR THE DEVELOPMENT OF STRAIN IN A FLEXIBLE PAVEMENT

GEOVLGEN VAN SCHEURVORMING IN EEN ZANDCEMENTSTABILISATIE VOOR HET SPANNINGSVERLOOP IN EEN ASFALTDEK

This paper was presented at the study session "cement and Concrete in Road- and Railroad Construction", held in Delft, May 1979. The causes of cracking by shrinkage (desiccation and cooling) of sand-cement are discussed. It is pointed out that the width and distance of cracks in sand-cement depend upon the shrinkage, the creep and the strain at rupture and furthermore on the friction between the stabilized roadbase and the suubbase. It is stated that a high friction between the stabilized roadbase and the subbase must be strived for. In order to reduce the tensile stress of asphaltic concrete on the spot of a crack in the sand-cement it is recommended to apply a basecourse of 1 cm with e=1000 n/sq mm. It is also stated that with a wearing course of asphaltic concrete with e=5000 n/sq mm on cracked sand-cement an e-modulus has to be assumed, which totals half of the e-modulus of not-cracked sand-cement. Cracking pattern figures are incorporated. (TRRL)

  • Supplemental Notes:
    • Study Session "Cement and Concrete in Road and Railroad Construction".
  • Corporate Authors:

    Technische Hogeschool

    Stevinweg 1
    Delft,   Netherlands 
  • Authors:
    • LEEWIS, M
  • Publication Date: 1979-8

Language

  • Dutch

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 23 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00322500
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 15 1981 12:00AM