VISCO-ELASTO-PLASTIC BEHAVIOUR OF A HOT ROLLED ASPHALT MIXTURE UNDER REPEATED LOADING AND THE EFFECTS OF TEMPERATURE

In this paper the deformation behaviour of a rolled asphalt mixture is investigated, and the influence of temperature on the deformation mechanism of the mixture is assessed, based on a series of uniaxial creep and creep recovery experiments conducted under compressive stress and controlled temperature. Firstly, the experiments were conducted for various temperature levels, loading time, and number of load applications. It is found that the total strain consists of the elastic, plastic, viscoelastic and viscoplastic strain components. The temperature and number of load cycles hardly affects the elastic strain, but the plastic strain increases with temperature and decreases with number of load applications at constant stress levels. The time-dependent (viscoelastic and viscoplastic) and the instant deformation (elastic and plastic) is reduced respectively to viscoelastic and elastic deformation components at low temperature. Finally the relationships between the total strain and the variables time, temperture, stress, and number of cycles are successfully modelled mathematically.

• Corporate Authors:

  Minnesota Department of Transportation

  395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Authors:
  • WRIGHT, P J
  • Zheng, Lijun
• Conference:
  • 4th International Conference, Bearing Capacity of Roads and Airfields
  • Location: Minneapolis, MN
  • Date: 1994-8-17 to 1994-8-21
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 1053-1065
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Accelerated tests; Behavior; Compression; Creep; Deformation; Elasticity (Mechanics); Hot rolling; Mechanical relaxation; Mixtures; Plasticity; Repeated loads; Strain (Mechanics); Temperature; Viscoelasticity
• Uncontrolled Terms: Hot rolled asphalt; Uniaxial compression
• Old TRIS Terms: Uniaxial strain
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00730105
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Dec 17 1997 12:00AM