TEMPERATURE GRADIENT IN A FULL DEPTH ASPHALT AND ITS EFFECT ON MODULUS AND SHEAR GRADIENTS

The modulus of an asphalt bound layer is temperature dependent. At low temperatures, the modulus value is larger than its value at high temperatures. Pavement temperature may be neither constant nor linear with pavement depth and hence its modulus value may be neither constant nor linear with pavement depth. Information regarding temperature gradient along the asphalt bound layer becomes valuable when the daily, monthly and seasonal variations in temperature gradient are with such magnitude that the modulus gradient is largely affected. This paper provides information related to changes in temperature gradient, in a 12 inch (30 cm) full depth asphalt, caused by variations in air temperatures. Resulting changes in pavement modulus gradient, represented by the diametral resilient modulus, and shear stress gradient are investigated. (A) For the covering abstract of the conference see IRRD 873950.

• Corporate Authors:

  STEERING COMMITTEE CAPSA '94

  PO BOX 6946
  ROGGEBAAI,   South Africa  8012
• Authors:
  • Noureldin, A S
• Conference:
  • PROCEEDINGS OF THE 6TH CONFERENCE ON ASPHALT PAVEMENTS FOR SOUTHERN AFRICA, CAPSA '94, HELD CAPE TOWN OCTOBER 1994. VOL 1
• Publication Date: 1994

Language

• English

Media Info

• Features: References;
• Pagination: III152-III167

Subject/Index Terms

• TRT Terms: Bitumen; Bituminous mixtures; Conferences; Highway grades; Modulus of elasticity; Shear strength; Slopes; Stresses; Temperature
• ITRD Terms: 4963: Bitumen; 4967: Bituminous mixture; 8525: Conference; 2806: Gradient; 5919: Modulus of elasticity; 5531: Shear; 5575: Stress (in material); 6722: Temperature
• Subject Areas: Data and Information Technology; Highways;

Filing Info

• Accession Number: 00714399
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Dec 27 1995 12:00AM