MATERIALS CHARACTERIZATION AND RESPONSE OF FLEXIBLE PAVEMENTS AT LOW TEMPERATURES (WITH DISCUSSION)

A research program was developed to monitor and define the response and failure characteristics of pavements subjected to thermal and dynamic loading conditions. A 4-in. (10-cm) asphalt concrete pavement was tested under controlled temperature conditions in an enclosed concrete test pit. Thermal contraction strains were measured as the pavement was cooled from room temperature to temperatures below freezing. Load-induced deflections and strains in the pavement were measured for dynamic load tests performed at temperatures ranging from -6.7 deg C (20 deg F) to 25.6 deg C (78 deg F). Finally, permanent deflections and creep strains were measured for specified durations of static loads at temperatures ranging from 0.0 deg C (32 deg F) to 13.3 deg C (56 deg F). Dynamic load tests were also performed at different times during the creep tests to observe the effect of creep on the dynamic load response of the pavement. The majority of load tests were performed with a flexible dual-wheel loading system, while some were performed using a 12-in. (30.5-cm) diameter rigid plate. The measurements obtained were compared with predictions made with an elastic layer theory computer program and the results of the investigation are presented in this paper.

• Corporate Authors:

  Association of Asphalt Paving Technologists (AAPT)

  400 Selby Avenue, Suite I
  St Paul, MN  United States  55102
• Authors:
  • Roque, R
  • Buth, B E
• Conference:
  • Association of Asphalt Paving Technologists Proc
• Publication Date: 1987

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 130-167
• Serial:
  • Volume: 56

Subject/Index Terms

• TRT Terms: Alternatives analysis; Asphalt concrete; Asphalt pavements; Creep tests; Deflection; Dynamic loads; Elasticity (Mechanics); Flexible pavements; Forecasting; Laboratory tests; Low temperature tests; Pavements; Properties of materials; Static loads; Strain (Mechanics); Testing equipment; Thermal stresses
• Uncontrolled Terms: Materials characterization; Thermal loads
• Old TRIS Terms: Elastic layer theory; Pavement deflection; Strains; Test results
• Subject Areas: Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00739794
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 28 1997 12:00AM