Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays
The defects of poor workability and inadequate pavement performance of the ultra-thin asphalt overlay limited its application in the preventive maintenance of pavements. In this study, a high-workability ultra-thin (HWU) asphalt overlay scheme was proposed. A high-strength-modified asphalt binder an...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/6/2123 |
| _version_ | 1797445687473864704 |
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| author | Jinquan Wang Jia Sun Sang Luo Qiang Li |
| author_facet | Jinquan Wang Jia Sun Sang Luo Qiang Li |
| author_sort | Jinquan Wang |
| collection | DOAJ |
| description | The defects of poor workability and inadequate pavement performance of the ultra-thin asphalt overlay limited its application in the preventive maintenance of pavements. In this study, a high-workability ultra-thin (HWU) asphalt overlay scheme was proposed. A high-strength-modified asphalt binder and an optimized HWU-10 gradation were used to prepare the HWU asphalt mixture and explore its laboratory performance. Furthermore, the HWU asphalt mixture was used for the test road paving. Based on the field performance test results before and after the test road for one year of traffic operation, the application performance of the HWU asphalt mixture and styrene-butadiene-styrene (SBS)-modified asphalt mixture was compared and analyzed. The results showed that the HWU asphalt mixture possessed satisfactory laboratory pavement performance, and its high-temperature stability and moisture damage resistance were better than those of the SBS-modified asphalt mixture. The asphalt mixture prepared using HWU-10 gradation was easily compacted and showed good workability. After one year of operation, all field performance of the ultra-thin overlay paved with HWU asphalt mixture met the specification requirements, but its flatness and skid resistance decreased. It is worth mentioning that the HWU asphalt mixture was significantly better than the SBS-modified asphalt mixture in terms of performance degradation resistance and rutting resistance. The studies to enhance the road intersection pavement performance and ensure the homogeneous dispersion of polyester fibers in the asphalt mixture will be considered in the future. |
| first_indexed | 2024-03-09T13:29:26Z |
| format | Article |
| id | doaj.art-9f57e28b3a8e43b1abb129f41f8554eb |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T13:29:26Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-9f57e28b3a8e43b1abb129f41f8554eb2023-11-30T21:19:56ZengMDPI AGMaterials1996-19442022-03-01156212310.3390/ma15062123Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt OverlaysJinquan Wang0Jia Sun1Sang Luo2Qiang Li3School of Transportation, Southeast University, Nanjing 211189, ChinaSchool of Transportation, Southeast University, Nanjing 211189, ChinaSchool of Transportation, Southeast University, Nanjing 211189, ChinaSchool of Civil Engineering, Nanjing Forestry University, Nanjing 210037, ChinaThe defects of poor workability and inadequate pavement performance of the ultra-thin asphalt overlay limited its application in the preventive maintenance of pavements. In this study, a high-workability ultra-thin (HWU) asphalt overlay scheme was proposed. A high-strength-modified asphalt binder and an optimized HWU-10 gradation were used to prepare the HWU asphalt mixture and explore its laboratory performance. Furthermore, the HWU asphalt mixture was used for the test road paving. Based on the field performance test results before and after the test road for one year of traffic operation, the application performance of the HWU asphalt mixture and styrene-butadiene-styrene (SBS)-modified asphalt mixture was compared and analyzed. The results showed that the HWU asphalt mixture possessed satisfactory laboratory pavement performance, and its high-temperature stability and moisture damage resistance were better than those of the SBS-modified asphalt mixture. The asphalt mixture prepared using HWU-10 gradation was easily compacted and showed good workability. After one year of operation, all field performance of the ultra-thin overlay paved with HWU asphalt mixture met the specification requirements, but its flatness and skid resistance decreased. It is worth mentioning that the HWU asphalt mixture was significantly better than the SBS-modified asphalt mixture in terms of performance degradation resistance and rutting resistance. The studies to enhance the road intersection pavement performance and ensure the homogeneous dispersion of polyester fibers in the asphalt mixture will be considered in the future.https://www.mdpi.com/1996-1944/15/6/2123ultra-thin asphalt overlayhigh workabilityhigh- and low-temperature performancemoisture damage resistancefield road performance |
| spellingShingle | Jinquan Wang Jia Sun Sang Luo Qiang Li Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays Materials ultra-thin asphalt overlay high workability high- and low-temperature performance moisture damage resistance field road performance |
| title | Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays |
| title_full | Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays |
| title_fullStr | Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays |
| title_full_unstemmed | Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays |
| title_short | Laboratory and Field Performance Evaluation of High-Workability Ultra-Thin Asphalt Overlays |
| title_sort | laboratory and field performance evaluation of high workability ultra thin asphalt overlays |
| topic | ultra-thin asphalt overlay high workability high- and low-temperature performance moisture damage resistance field road performance |
| url | https://www.mdpi.com/1996-1944/15/6/2123 |
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