MECHANISTIC EVALUATION OF SATURATED BASES UNDER CONCRETE PAVEMENTS

The response of concrete pavements overlying a multilayer soil system is predicted via a new mechanistic method. The method utilizes a finite-element discretization of a concrete slab and a variable foundation support that depends on the nonlinear resilient moduli of the underlying soil layers. Excess pore-water pressure in saturated granular layers and the corresponding loss of foundation support under the pavement structure is considered in this method. In an application of the proposed method, the behavior of a concrete pavement supported by granular bases over a soft clay layer was investigated. Moist compacted and saturated conditions were observed for typical dense-graded and open-graded unbound granular bases. Pavement deflections, stresses, excess pore pressure, and compression settlement associated with pore-pressure dissipation, under various support conditions, were evaluated and compared.

Language

  • English

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Filing Info

  • Accession Number: 00712762
  • Record Type: Publication
  • Files: TRIS, ATRI
  • Created Date: Oct 26 1995 12:00AM