ASSESSMENT OF THE MECHANICAL PROPERTIES OF ASPHALTIC MIXES ON A ROUTINE BASIS USING SIMPLE EQUIPMENT

This paper describes the use of simple testing equipment at Nottingham University, England, to enable the important mechanical properties of asphalt paving materials to be measured and assessed on a routine basis. A load is applied, using a pneumatic actuator. Test control and data acquisition are carried out by a personal computer via a digital interface unit, which also contains power supplies and transducer signal conditioning modules. Tests that can be performed include: (1) the measurement of elastic stiffness in the indirect tensile mode; (2) uniaxial static creep; (3) repeated axial load; (4) dynamic creep; and (5) fatigue. Tests may be conducted either on laboratory moulded specimens or on cores cut from a pavement. The results of the tests are described in some detail, and show that simple equipment can be used as a versatile and convenient tool for routine 'trouble shooting' investigations and quality control in a materials laboratory. The increased use of such equipment would provide materials engineers with more understanding of the properties of the materials that they are using, and of the factors that influence these properties. For the covering abstract see IRRD 869274.

• Corporate Authors:

  INSTITUTE OF ASPHALT TECHNOLOGY

  PAPER MEWS PLACE, 290 HIGH STREET
  DORKING, SURREY  United Kingdom  RH4 1QT
• Authors:
  • Cooper, K E
  • BROWN, S F
• Publication Date: 1995

Language

• English

Media Info

• Features: References;
• Pagination: p. 35-40
• Serial:
  • THE ASPHALT YEARBOOK 1995
  • Publisher: INSTITUTE OF ASPHALT TECHNOLOGY

Subject/Index Terms

• TRT Terms: Bituminous mixtures; Creep; Data collection; Digital computers; Fatigue (Mechanics); Loads; Nondestructive tests; Pavements; Quality assurance; Stiffness; Test procedures
• ITRD Terms: 6155: Apparatus (measuring); 4955: Bituminous materials; 4967: Bituminous mixture; 4732: Creep (mater); 8623: Data acquisition; 8673: Digital computer; 5579: Fatigue (mater); 5567: Load; 4714: Mix design; 6216: Non destructive testing; 2955: Pavement; 9123: Quality assurance; 5931: Stiffness; 6288: Test method
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00677376
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: May 25 1995 12:00AM