This paper summarizes the findings of a study conducted to evaluate the tensile strength, modulus of elasticity, and Poisson's ratio and to determine the variations in these properties in portland cement concrete from in-service pavements in Texas for use in elastic and stochastic pavement design systems. Field cores of concrete from 10 recently completed highway pavement projects in Texas were tested by using the indirect tensile test,. Mean values for the tensile strength and modulus of elasticity were established, and the variation about these mean values was estimated. Estimates of the variation associated with density and thickness were also made. The average tensile strength and modulus of elasticity for all 10 projects were 471 and 4 million psi (3247.45 and 27.58 GPa) respectively. Tensile strengths ranged from 3.36 million to 5.02 million psi (23.17 to 34.61 GPa). Significant variation also occurred in each project, and the magnitude of this project variation differed. The average coefficients of variation for the 10 projects were 20 percent for the strength and 234 percent for the modulus. The ranges of project coefficients for strength and modulus were 19 to 29 and 22 to 42 percent respectively. Because of the lack of significant project differences for strength, it was concluded that a single variation value could not be established for Texas but that the characteristic values for modulus of elasticity were project dependent. /Author/

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 138-149
  • Monograph Title: Pavement design, performance and rehabilitation
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00139568
  • Record Type: Publication
  • ISBN: 0309024854
  • Files: TRIS, TRB
  • Created Date: Oct 6 1976 12:00AM