A RIGID PAVEMENT REHABILITATION DESIGN SYSTEM

This paper summarizes the development, use, and applicability of the new Texas Rigid Pavement Rehabilitation Design System, RPRDS. Like other pavement design systems, RPRDS makes use of the systems concept and incorporates a number of pavement design and analytical models into a computer program, RPRDS-1, for the generation, analysis, and comparison of numerous pavement design strategies. Unlike other design systems, RPRDS only considers structural rehabilitation, i.e. overlay construction, where the design model used is an improved and extended version of the ARE Inc/FHWA and Texas SDHPT rigid pavement overlay design procedures, RPOD1 and RPOD2. In addition, provision is made in RPRDS for the consideration of other factors which affect pavement performance and accompany overlay construction. These include ACP, CRCP, and JCP type overlays; concrete shoulder construction; variable concrete flexural strength; as well as variable overlay thickness. Basically, RPRDS generates a number of feasible overlay design strategies based on user inputs, performs a present value cost analysis on each, and then presents those which are optimal. The other design and analytical models used to complete this task include 1) a distress/maintenance prediction model, 2) a traffic delay cost (during overlay construction) model, and 3) a model for the prediction of overlay construction cost. The original study which is summarized in this paper was conducted at the Center for Transportation Research at The University of Texas at Austin as part of a cooperative research program with the Texas SDHPT. Hopefully, this paper will not only provide a summary of RPRDS but also some basis for its use nationwide. (Author)

Media Info

  • Features: Figures; References;
  • Pagination: p. 367-376

Subject/Index Terms

Filing Info

  • Accession Number: 00334268
  • Record Type: Publication
  • Report/Paper Numbers: Proceeding
  • Files: TRIS, USDOT
  • Created Date: Sep 16 1981 12:00AM