THICKNESS DESIGN CURVES FOR PORTLAND CEMENT CONCRETE PAVEMENTS

Past experience indicates that thickness designs using portland cement concrete best agree with criterion used in the Portland Cement Association's design method for 18-kip EAL of 2 to 3 million or less. For EALs greater than 2 to 3 million, past experience best agrees with criterion developed from the AASHO Road Test. Research herein indicates the two criterion become asymptotic to each other at approximately 2.5 million EAL. For a variation in thickness and elastic moduli in portland cement concrete, dense-graded aggregate, and subgrade elastic modulus, research indicates that a general conic equation (included herein) very closely 18-kip single axleload. The transition from a tensile strain to a work criterion is presented. Decreasing the thickness of dense-graded aggregate base caused a maximum increase of 0.15 inches in the thickness of portland cement concrete. Thus, the design curves are presented for a concrete elastic modulus of 4.2 million psi (Kentucky concrete strength). (Author)

• Record URL:
  • http://uknowledge.uky.edu/ktc_researchreports/703
• Corporate Authors:

  University of Kentucky, Lexington

  Kentucky Transportation Center
  College of Engineering, 176 Raymond Building
  Lexington, KY  United States  40506-0281

  Kentucky Transportation Cabinet

  State Office Building, 200 Mero Street
  Frankfort, KY  United States  40622

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Southgate, H F
  • Deen, R C
• Publication Date: 1984-2

Media Info

• Features: Figures; References; Tables;
• Pagination: 12 p.

Subject/Index Terms

• TRT Terms: Dense graded aggregates; Design; Modulus of elasticity; Pavement design; Pavement subgrade; Portland cement concrete; Tension; Thickness
• Uncontrolled Terms: Design criteria; Design curves
• Old TRIS Terms: Thickness design
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00393780
• Record Type: Publication
• Report/Paper Numbers: Res. Rpt. UKTRP-84-3Intrm Rpt.
• Contract Numbers: KY-80-86, KY-84-96
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: May 31 1988 12:00AM