The alignment of an important highway in Bombay passes over the area filled up with city garbage deposits, 1.5 to 5 metre deep, dumped over a number of years. The problems of embankment design on such uncontrolled and unconsolidated fills of heterogeneous materials for which the time settlement characteristics under load are very difficult to determine accurately, was tackled by resorting to a novel method of preloading. Under this method, the subgrade is subjected to sustained extra load for a few months to achieve the long term settlements, after which the surcharge load over the embankment is removed and the road crust is laid. The paper deals with laboratory investigations and full scale field studies of the properties of the refuse deposit with a view to designing the road embankment over it. In order to check the time-dependent settlements computed from the laboratory test data, a full scale test embankment was built and fully instrumented. The final design with use of preloading technique was evolved based on observations of the field test embankment. The paper gives details of tests conducted, observations on test embankment, as well as the details of design and construction of the road proper by preloading technique and its actual performance. Recommendations for construction of roads over city refuse deposits are also given.(a) (TRRL)

  • Availability:
  • Corporate Authors:

    Indian Roads Congress

    Jamnagar House, Shahjahan Road
    New Delhi,   India  110 011
  • Authors:
    • Merani, N V
    • Natarajan, T K
  • Publication Date: 1979-12

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 539-589
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00324638
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Sep 16 1981 12:00AM