LIMITING CRITERIA FOR THE DESIGN OF CRCP

The primary factors to consider in the thickness and reinforcement design for continuously reinforced concrete pavements are the structural response variables; crack spacing, crack width, and maximum steel stress. They plant an important role in the outcome of the pavement performance, and can be related to the major distresses common to CRC pavements. In the previous report, 177-16, the relationships between the significant input variables and the structural responses predicted by the CRCP-2 computer model were quantified using regression techniques and expressed as a set of nomographs. This set of design changes enables us to graphically predict the final crack spacing, crack width, and steel stress in CRC pavement. This report determines the design limiting criteria for these structural responses. Previous investigations of the design criteria were reviewed and the most recently developed analytical models studied. The basic procedures used to establish the design criteria included examination of the major distresses such as punchout, spalling, and steel rupture and study of correlations between these distresses and the corresponding structural responses at appropriate levels. The procedure for use of these limiting criteria in CRCP design is outlined along with a series of guidelines for the selection of CRCP design input values. (FHWA)

• Supplemental Notes:
  • Study conducted in cooperation with the Department of Transportation, Federal Highway Administration. Research study title: "Development and Implementation of the Design, Construction, and Rehabilitation of Rigid Pavement."
• Corporate Authors:

  University of Texas, Austin

  Center for Highway Research, 200 West 21st Street
  Austin, TX  United States  78712

  Texas State Department of Highways & Public Transportation

  Transportation Planning Division, P.O. Box 5051
  Austin, TX  United States  78763
• Authors:
  • McCullough, B F
  • Ma, JCM
  • Noble, C S
• Publication Date: 1979-8

Media Info

• Pagination: 79 p.

Subject/Index Terms

• TRT Terms: Concrete pavements; Continuously reinforced concrete pavements; Cracking; Design; Pavement design; Rock fracture; Simulation; Spacing; Spalling; Steel; Stresses; Width
• Uncontrolled Terms: Design criteria
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00319106
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA/TX-79/21+177-17Intrm Rpt., FCP 45D2-424
• Contract Numbers: Res Stdy 3-8-75-177
• Files: TRIS, STATEDOT
• Created Date: Nov 19 1980 12:00AM