Conditions of economy, ecology, and energy have made it mandatory to review concepts and procedures in the orothodox methods of constructing and designing rigid pavement systems. The pavement concept proposed herein has the potential of providing a system which addresses the postulated requirements, particularly in areas where quality aggregates have become sparce or depleted. The system proposed consists of an econocrete base with a relatively thin layer of quality concrete bonded to it. Econocrete has found wide application in pavement construction but primarily as a subbase for a concrete pavement. However, the properties of econocrete are better utilized when the econocrete layer is bonded to the pavement and becomes an integral part of the system. To take full advantage of the econocrete layer in this manner, an appropriate design procedure must be provided which will take due account of material characteristics of the composite layers. For this purpose a design procedure is proposed, taking advantage of the theoretical work presented by S. D. Kohn in "Structural Design of Composite Pavements." The procedure contained herein establishes a method to estimate the shear stress at the interface between the composite layers. A limiting shear stress at the interface provides the necessary criterion for a rational estimate of layer thickness. This presentation provides a rational procedure, taking due account of traffic and material properties, for the design of a composite pavement system. Although the procedure has general application, it is specifically intended to find use in the design of a rigid pavement using a high quality thin concrete wearing course bonded to an econocrete composite base structure. (Author)

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 99-105

Subject/Index Terms

Filing Info

  • Accession Number: 00334245
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS, USDOT
  • Created Date: Sep 16 1981 12:00AM