INNOVATIVE REHABILITATION OF PAVEMENT FOR LIGHT LOAD AIRCRAFT
This report presents findings of research conducted under IPRF Project FAA-01-G-002-3. The research was conducted in two parts - Track 1 was a field evaluation of existing ultra-thin-whitetopping (UTW) projects, and Track 2 was a laboratory evaluation of the UTW bond on specially prepared samples. Track 1 encompassed field study of in-service (UTW) pavements. Three airfields with UTW pavements and five highway/parking lot UTW projects were visited to gain first-hand knowledge about UTW performance over the years. These projects ranged in age from almost new to fairly old. The oldest project, despite being 12 years old, was still performing well. Corner breaks, cracks, and shattered slabs were the predominant distresses at all the sites visited; there was no real evidence of loss of bond due to climate. Most of the distresses were in areas subjected to heavy traffic (fuel trucks and school buses generally weighing more than 30 kips). Track 2 involved the laboratory evaluation of the UTW bond (when subjected to simulated environmental conditions) and included construction of a test section and laboratory testing of samples obtained from the field test section. The test section was constructed at ERDC on an old asphalt concrete (AC) test road. UTW samples, measuring 34 inches by 34 inches by 7 inches (864 mm by 864 mm by 178 mm), were extracted from the test section and subjected to laboratory freeze and thaw (F&T) and wet and dry (W&D) environmental exposure (in specially designed exposure stations). The hot/cold (H&C) tests that were initially planned were not conducted. The laboratory results indicated that when a UTW pavement is constructed using field durable materials and the AC surface is properly milled and cleaned prior to placement of the Portland cement concrete (PCC), then the bond between the two materials is at least as durable as the AC or PCC. This essentially means that if a UTW pavement is constructed using proper construction techniques, bond failure due to environmental factors should not be a concern.
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Corporate Authors:
Innovative Pavement Research Foundation
Program Management Office, 1010 Massachusetts Avenue, NW
Washington, DC United States 20001 -
Authors:
- Hall, J W
- Saeed, A
- Alexander, A M
- Publication Date: 2004-9
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: 182 p.
Subject/Index Terms
- TRT Terms: Aircraft by size; Airport runways; Asphalt concrete pavements; Bond strength (Materials); Deterioration by environmental action; Dry weather; Durability; Field tests; Freeze thaw tests; Highways; Innovation; Laboratory tests; Loads; Parking lots; Pavement distress; Pavement maintenance; Pavement performance; Portland cement concrete; Rehabilitation; Wet weather
- Uncontrolled Terms: Ultra-thin whitetopping
- Subject Areas: Aviation; Design; Highways; Pavements; Terminals and Facilities; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;
Filing Info
- Accession Number: 00981936
- Record Type: Publication
- Report/Paper Numbers: IPRF-01-G-002-3
- Files: TRIS
- Created Date: Nov 22 2004 12:00AM