Tests for evaluating the stability of bituminous pavements are discussed, and the splitting tensile test for measuring the tensile strength under diametral compression of bituminous mixtures is detailed. The latter method consists of imposing (at a given speed) a deformation by diametral compression on a cylindrical test specimen placed horizontally between the plates of a press - the stresses being applied to opposite generatrices. The test is performed up to failure, and stress and deformation is measured. The theoretical study of the splitting tensile test derives from the solution of the problem of a circular disc subjected to the action of two equal, diametrically opposed forces. The matter is thus handled in the frame of plane elasticity, i.e. the test is interpreted by considering, notably, that the stresses and strains comply at any time and at any point with the elasticity theory, that Hooke's Law applies up to failure, that any deformation parallel to the disc axis is impossible and that stresses vanish on the disc rim, except on the diametrically opposed points where the forces are applied. The mathematical solution complying with the imposed conditions are discussed, and the chief features concerning the application of the splitting tensile test are noted. Studies show that it is possible to evaluate the reproducibility ranges of this test on bituminous concrete in the form of an intralaboratory variation coefficient of 5 to 10 percent and an interlaboratory variation coefficient of 10 to 20 percent. The sensitivity and application possibilities are discussed, as well as the results obtained in cores from pavements, and tentative mechanical stability criteria.

  • Authors:
    • Huet, J
  • Publication Date: 1973-10

Media Info

  • Features: Tables;
  • Pagination: 23 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00097165
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 10 1975 12:00AM