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https://hdl.handle.net/11681/9102| Title: | Performance of asphalt concrete airport pavements during thaw weakening periods : a field study |
| Authors: | United States. Federal Aviation Administration Janoo, Vincent C. Berg, Richard L. |
| Keywords: | Airfield pavements Asphalt concrete pavements Falling weight deflectometer Frost damage Frost heaving Cold weather conditions |
| Publisher: | Cold Regions Research and Engineering Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | CRREL report ; 91-7. |
| Description: | CRREL Report Abstract: It is accepted that in the winter the load-carrying capacity of pavements increases dramatically because of freezing of the pavement structure. This is more striking in asphalt concrete pavements because of the stiffening of the asphalt at low temperatures. In the spring, the pavement structure below the asphalt layer thaws and can become saturated with water from the melting ice lenses, reducing the strength of the base, subbase and subgrade. In the spring of 1986, CRREL conducted Falling Weight Deflectometer (FWD) measurements at an airfield in Wisconsin, which had pavements that were primarily asphalt concrete, to determine the change in the load-bearing capacity of these pavement structures in a seasonal frost area during thaw weakening periods. In addition to FWD measurements, surface and subsurface pavement temperatures were measured at selected sites. This report gives a general description of the airfield and the pavement structure and a comprehensive analysis of the FWD measurements. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/9102 |
| Appears in Collections: | CRREL Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| CR-91-7.pdf | 989.47 kB | Adobe PDF |  View/Open |