Determination of the Elastic Modulus and Poisson's Ratio of Asphaltic Mixtures Using Uniaxial Creep Recovery Tests

Elastic modulus and Poisson's ratio are the main parameters in elastic analysis of pavements, and also used in viscoelastic and elasto-visco-plastic analysis. These are the main parameters in elastic analysis of pavements, and also used for viscoelastic and elasto-visco-plastic analysis. The values of these parameters for asphaltic mixtures are determined using empirical values, formulations or experiments specifically designed for their determination. This describes the determination of these parameters using uniaxial single and repeated creep recovery tests by measuring the radial and axial strain of specimen. The tests were carried out, over a range of test conditions, on two types of asphaltic mixtures used in the UK pavements, namely a 10 mm DBM and HRA30/10. The variation of the parameters with temperature, stress level and accumulated strain level has been studied for the mixtures. It is found that the elastic modulus of asphaltic mixtures decreases with increasing damage in the mixtures. A formulation is developed for prediction of the elastic modulus of the mixtures as a function of stress level, temperature and the accumulated damage in the mixture.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 159-170
  • Monograph Title: Airfield and Highway Pavements. Efficient Pavements Supporting Transportation's Future

Subject/Index Terms

Filing Info

  • Accession Number: 01144321
  • Record Type: Publication
  • ISBN: 9780784410059
  • Files: TRIS
  • Created Date: Nov 11 2009 3:52PM