摘要
Since the identification of segregation on asphalt pavements has been based on visual observations in Taiwan, it is essential to develop a quantitative method to detect presence and severity of segregation. The non-nuclear density device was selected for the field measurements at nine test sites, and cores were taken for laboratory testing. The non-nuclear density difference between segregated and control areas was found to increase with increasing the segregation severity. For medium or heavy segregated areas, the non-nuclear density difference was more than 90 kg/m3. Analyses of the results showed that there was a significant increase in surface texture depth of segregated areas as compared to control areas. In medium or heavy segregated areas, the air voids increased by 20% and the indirect tensile strength decreased by 8% as compared to the control area. The criterion to detect segregation was based on the statistical differences in non-nuclear measured density values with a p-value 0.05. If a statistical difference in non-nuclear density between segregated and control areas existed, the chance of aggregate gradation difference in percent passing the 3/8", No. 4 and No. 8 sieves for medium and heavy segregation was 78% and 64%, respectively.
原文 | English |
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頁面 | 241-246 |
頁數 | 6 |
出版狀態 | Published - 2007 1月 1 |
事件 | 5th International Conference on Maintenance and Rehabilitation of Pavements and Technological Control, MAIREPAV 2007 - Park City, United States 持續時間: 2007 8月 8 → 2007 8月 10 |
Other
Other | 5th International Conference on Maintenance and Rehabilitation of Pavements and Technological Control, MAIREPAV 2007 |
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國家/地區 | United States |
城市 | Park City |
期間 | 07-08-08 → 07-08-10 |
All Science Journal Classification (ASJC) codes
- 土木與結構工程
- 建築與營造