Research on the influence of RAP and aged asphalt on the performance of plant-mixed hot recycled asphalt mixture and blended asphalt
The overuse of resources and environmental destruction has led to the development of renewable research. Research on reclaimed asphalt pavement (RAP) has received widespread attention. In this study, reclaimed milling material from China’s Changyu Highway, which has been in operation for 15 years, w...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509521002370 |
| _version_ | 1818571369901719552 |
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| author | Yuheng Chen Zhiguo Chen Qian Xiang Weijun Qin Junyan Yi |
| author_facet | Yuheng Chen Zhiguo Chen Qian Xiang Weijun Qin Junyan Yi |
| author_sort | Yuheng Chen |
| collection | DOAJ |
| description | The overuse of resources and environmental destruction has led to the development of renewable research. Research on reclaimed asphalt pavement (RAP) has received widespread attention. In this study, reclaimed milling material from China’s Changyu Highway, which has been in operation for 15 years, was used to study the influence of aged asphalt content on the rheological properties, high-temperature performance, low-temperature performance and microscopic performance of blended asphalt and the impact of RAP content on the high-temperature stability, low-temperature crack resistance, water stability and resilience performance of recycled asphalt mixtures. The results show that the impact of aged asphalt content on the performance of base asphalt shares the same trend with the influence of RAP content on the performance of recycled asphalt mixture. With the admixing of aged asphalt, the blended asphalt is harder, increases in elasticity, and decreases in viscosity. The high-temperature performance improves, but the low-temperature performance worsens. With the addition of RAP, the water stability of the recycled asphalt mixtures improves, the high-temperature stability improves, and the low-temperature crack resistance worsens. This result is consistent with dynamic modulus test results. Overall, based on the micro and macro properties of blended asphalt and asphalt mixtures, a reasonable RAP content of 30% for road performance is given when the gradation is ATB-25. |
| first_indexed | 2024-12-14T13:54:47Z |
| format | Article |
| id | doaj.art-d316aa5b07434e74886700aac3df3ca2 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-12-14T13:54:47Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-d316aa5b07434e74886700aac3df3ca22022-12-21T22:58:52ZengElsevierCase Studies in Construction Materials2214-50952021-12-0115e00722Research on the influence of RAP and aged asphalt on the performance of plant-mixed hot recycled asphalt mixture and blended asphaltYuheng Chen0Zhiguo Chen1Qian Xiang2Weijun Qin3Junyan Yi4Jilin Provincial Transport Scientific Research Institute, Changchun 130102, China; School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, ChinaJilin Provincial Transport Scientific Research Institute, Changchun 130102, ChinaKey Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, 4800 Cao’an Highway, Shanghai 201804, ChinaJilin Provincial Transport Scientific Research Institute, Changchun 130102, ChinaSchool of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China; Correspondence to: School of Transportation Science and Engineering, Harbin Institute of Technology, No.73 Huanghe Road, Harbin, Heilongjiang Province 150090, China.The overuse of resources and environmental destruction has led to the development of renewable research. Research on reclaimed asphalt pavement (RAP) has received widespread attention. In this study, reclaimed milling material from China’s Changyu Highway, which has been in operation for 15 years, was used to study the influence of aged asphalt content on the rheological properties, high-temperature performance, low-temperature performance and microscopic performance of blended asphalt and the impact of RAP content on the high-temperature stability, low-temperature crack resistance, water stability and resilience performance of recycled asphalt mixtures. The results show that the impact of aged asphalt content on the performance of base asphalt shares the same trend with the influence of RAP content on the performance of recycled asphalt mixture. With the admixing of aged asphalt, the blended asphalt is harder, increases in elasticity, and decreases in viscosity. The high-temperature performance improves, but the low-temperature performance worsens. With the addition of RAP, the water stability of the recycled asphalt mixtures improves, the high-temperature stability improves, and the low-temperature crack resistance worsens. This result is consistent with dynamic modulus test results. Overall, based on the micro and macro properties of blended asphalt and asphalt mixtures, a reasonable RAP content of 30% for road performance is given when the gradation is ATB-25.http://www.sciencedirect.com/science/article/pii/S2214509521002370Reclaimed asphalt pavementBlended asphaltRecycled asphalt mixtureMacroscopic performanceMicroscopic performance |
| spellingShingle | Yuheng Chen Zhiguo Chen Qian Xiang Weijun Qin Junyan Yi Research on the influence of RAP and aged asphalt on the performance of plant-mixed hot recycled asphalt mixture and blended asphalt Case Studies in Construction Materials Reclaimed asphalt pavement Blended asphalt Recycled asphalt mixture Macroscopic performance Microscopic performance |
| title | Research on the influence of RAP and aged asphalt on the performance of plant-mixed hot recycled asphalt mixture and blended asphalt |
| title_full | Research on the influence of RAP and aged asphalt on the performance of plant-mixed hot recycled asphalt mixture and blended asphalt |
| title_fullStr | Research on the influence of RAP and aged asphalt on the performance of plant-mixed hot recycled asphalt mixture and blended asphalt |
| title_full_unstemmed | Research on the influence of RAP and aged asphalt on the performance of plant-mixed hot recycled asphalt mixture and blended asphalt |
| title_short | Research on the influence of RAP and aged asphalt on the performance of plant-mixed hot recycled asphalt mixture and blended asphalt |
| title_sort | research on the influence of rap and aged asphalt on the performance of plant mixed hot recycled asphalt mixture and blended asphalt |
| topic | Reclaimed asphalt pavement Blended asphalt Recycled asphalt mixture Macroscopic performance Microscopic performance |
| url | http://www.sciencedirect.com/science/article/pii/S2214509521002370 |
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