AN ASSESSMENT OF POISSON'S RATIO FOR BITUMINOUS MATERIALS

Poisson's ratio has important applications to analytical pavement design as a serious option for designing and maintaining roads, and to the development of test methods such as the indirect tensile stiffness modulus test and the indirect tensile fatigue test. This paper presents the results of conducting various tests to measure the correct values of Poisson's Ratio under the range of conditions likely to be found in service. The initial test programme consisted of testing a typical sand-asphalt mixture complying with British Standard BS 594 (8). Because some 'unrealistic' values of Poisson's ratios were obtained in some of the tests of cylindrical specimens in the Nottingham Asphalt Tester (NAT), some validation work had to be done on the measurement and analysis systems used. The paper gives examples of results on testing cylindrical specimens in the indirect tensile mode, and measurements of Poisson's ratio on 100mm cubes of sand-asphalt mixture at 0 degrees C, 20 degrees C, and 32 degrees C. Some results are also given for aluminium cubes and aluminium cores. The findings included the following: (1) a Poisson's ratio value of 0.35 can be assumed for bituminous materials under a wide range of test conditions; and (2) the linear elastic theory for a cylindrical specimen loaded on a diameter is correct for a linear elastic material. For the covering abstract see IRRD E104552.

• Corporate Authors:

  INSTITUTE OF ASPHALT TECHNOLOGY

  PAPER MEWS PLACE, 290 HIGH STREET
  DORKING, SURREY  United Kingdom  RH4 1QT
• Authors:
  • READ, J M
• Publication Date: 2000

Language

• English

Media Info

• Features: References;
• Pagination: p. 37-41
• Serial:
  • THE ASPHALT YEARBOOK 2000
  • Publisher: INSTITUTE OF ASPHALT TECHNOLOGY

Subject/Index Terms

• TRT Terms: Aluminum; Bituminous materials; Bituminous mixtures; Elasticity (Mechanics); Evaluation and assessment; Measurement; Measuring instruments; Pavement design; Poisson distributions; Poisson ratio; Sand; Standards; Temperature; Test procedures; Tests; Theory
• Geographic Terms: United Kingdom
• ITRD Terms: 7168: Aluminium; 6155: Apparatus (measuring); 4955: Bituminous materials; 4967: Bituminous mixture; 5912: Elasticity; 9020: Evaluation (assessment); 6136: Measurement; 3055: Pavement design; 5924: Poisson's ratio; 4105: Sand; 187: Specification (standard); 6722: Temperature; 6255: Test; 6288: Test method; 9078: Theory; 8119: United Kingdom
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00790373
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Apr 11 2000 12:00AM