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ROLLER MOUNTABLE ASPHALT PAVEMENT QUALITY INDICATOR.
| 题名： | ROLLER MOUNTABLE ASPHALT PAVEMENT QUALITY INDICATOR. |
| 作者： | Jaselkis-EJ; Han-H; Tan-L; Grigas-J; Brink-M (Editor) |
| 关键词： | ASPHALT-PAVEMENTS; COMPACTION-; DENSITY-; HOT-MIX-PAVING-MIXTURES; MEASUREMENT-; MICROWAVES-; QUALITY-CONTROL; REAL-TIME-MEASUREMENT; ROLLERS-; SIGNALS- |
| 摘要： | Asphalt density measurements have been traditionally used as an indication of roadway pavement quality. These measurements, however, have not been available in real time to make in-process corrections to the paving operation since the existing techniques require on the order of minutes (nuclear density gauge) to hours (core samples) to produce accurate density measurements. Traditional ground penetrating radar (GPR) techniques could also have limitations due to the changing properties of the hot mix asphalt pavement while it is being compacted. This paper describes a novel approach to measure, for the first time, the density of asphalt in real time using a differential microwave signal approach. Two antennas, one in front of a roller and another behind it, will measure reflected signals from the asphalt; the change in signal characteristic from the front to back of the roller will show to the operator the optimal compaction and density of the pavement. This technique will minimize the need to quantify the hot mix asphalt properties that change during the compaction process. Field studies show that this approach has potential. |
| 总页数： | Conference Title: Crossroads 2000. Location: Ames, Iowa. Sponsored by: Iowa State University and Iowa Department of Transportation. Held: 19980819-19980820. 1998. pp192-194 (6 Fig., 1 Ref.) |
| 报告类型： | 科技报告 |
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