A test road pavement was constructed near Griffith, N.S.W. consisting of four trial sections: conventional crushed rock and gravel; crushed rock with a layer of mesh between the rock and the subgrade; lime-stabilized local clay; and a thin layer of crushed rock on top of the previous pavement designed by the local council. In each section, levelling and chaining targets, psychrometers to measure soil suction, earth pressure cells and extensometers were installed. Soon after construction most of the road failed along the edges due to unusually heavy rainfall, illustrating the importance of subgrade moisture changes. The field observations showed that the local council design performed adequately, due to the presence of the previous pavement. The other sections showed considerable distress although parts of the gravel pavement incorporating the pvc mesh were satisfactory. This finding was of interest since the total pavement deflections in this section were identical to the normal gravel section, which showed considerable distress. /TRRL/

  • Corporate Authors:

    Commonwealth Scientific & Industrial Research Org

    314 Albert Street
    East Melbourne, Victoria,   Australia 
  • Authors:
    • Pappin, J W
  • Publication Date: 1978

Media Info

  • Features: References; Tables;
  • Pagination: 56 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00196841
  • Record Type: Publication
  • Source Agency: ARRB Group Ltd.
  • Report/Paper Numbers: Technical Report 73 Monograph
  • Files: ITRD, TRIS
  • Created Date: Sep 29 1979 12:00AM