DETERMINATION OF RUTTING IN ASPHALTIC CONCRETE PAVEMENTS: FIELD INSTRUMENTATION AND LABORATORY CHARACTERIZATIONS
This report describes a number of gages developed to measure the location and magnitude of ruts. These were installed in a newly constructed asphaltic concrete pavement. They measure lateral deflections and transient and permanent vertical deflections. Some preliminary vertical deflections are reported. An investigation of materials is also reported. The asphalt concrete base, dense-graded aggregate base, and subgrade material were characterized by (1) shear strength (triaxial tests), (2) rheologic behavior (creep tests), (3) permanent deformation characteristics (repeated-load and creep tests), (4) Young's modulus (resonant column tests), and (5) resilient properties (repeated-load tests). Empirical functions were formulated to describe the permanent deformation characteristics of all three materials.
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- Color illustrations reproduced in black and white.
Frankfort, KY United States 40601
Washington, DC United States 20590
- Allen, D L
- Publication Date: 1978-8
- Pagination: 62 p.
- TRT Terms: Aggregates; Asphalt concrete; Base course (Pavements); Bituminous mixtures; Creep tests; Deflection; Deformation; Flexible pavements; Load tests; Measuring instruments; Modulus of elasticity; Pavements; Resilience (Materials); Rheology; Ruts (Pavements); Shear strength; Studies; Triaxial shear tests
- Uncontrolled Terms: Rut; Triaxial tests
- Old TRIS Terms: Pavement deflection; Rheological studies
- Subject Areas: Geotechnology; Highways; Materials; Pavements;
- Accession Number: 00197719
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: RR-502 Intrm Rpt.
- Files: NTIS, TRIS, USDOT, STATEDOT
- Created Date: Sep 15 1979 12:00AM