Investigation of the rheological properties and micromorphology of waste plastic/bio-oil modified asphalt
This study investigated the feasibility of waste plastic/bio-oil modified asphalt (PBMA). The rheological behavior and micromorphology of PBMA were investigated. The results demonstrated that PBMA exhibited better storage stability. As the bio-oil content was 10 %, increasing the waste plastic dosag...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525004577 |
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| author | Libo Zhou Zhenliang Huang Wei Tang Yishan Lin Ping Zhang Jianghua Yi |
| author_facet | Libo Zhou Zhenliang Huang Wei Tang Yishan Lin Ping Zhang Jianghua Yi |
| author_sort | Libo Zhou |
| collection | DOAJ |
| description | This study investigated the feasibility of waste plastic/bio-oil modified asphalt (PBMA). The rheological behavior and micromorphology of PBMA were investigated. The results demonstrated that PBMA exhibited better storage stability. As the bio-oil content was 10 %, increasing the waste plastic dosage from 9 % to 12 % and 15 % resulted in a viscosity increase of 43mPa·s and 85mPa·s. The addition of waste plastic significantly improved the high-temperature rutting resistance, as reflected by the increased rutting index, higher recovery rate, and lower Jnr. However, the waste plastic negatively affected the low-temperature performance. As the waste plastic content was 12 %, increasing the bio-oil dosage from 12 % to 15 %, the m-value of PBMA increased by 16 %, and the stiffness modulus decreased by 11.6 %. The bio-oil enhanced the crack resistance of asphalt at −18°C. Compared to neat asphalt, the fatigue behavior of PBMA showed a substantial improvement. When the bio-oil dosage was 10 %, the optimal dosage of waste plastic should be set at 12 %. As the bio-oil dosage was 15 %, the waste plastic dosage should be increased to 15 %. The uniform dispersion of fluorescent structures was observed in PBMA 12–10 and PBMA 15–15, indicating complete dissolution of waste plastic in bio-asphalt. The SEM micromorphology indicated that the three-dimensional network appeared in modified asphalt. The utilization of waste plastic and bio-oil in modified asphalt promotes sustainable practices in road construction. |
| format | Article |
| id | doaj-art-c01b6e1103bf42499e6c790a74e7761e |
| institution | OA Journals |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-c01b6e1103bf42499e6c790a74e7761e2025-08-20T02:10:58ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0465910.1016/j.cscm.2025.e04659Investigation of the rheological properties and micromorphology of waste plastic/bio-oil modified asphaltLibo Zhou0Zhenliang Huang1Wei Tang2Yishan Lin3Ping Zhang4Jianghua Yi5Changsha Chengfa Group Xiangxing Construction Company, Changsha, Hunan 410114, ChinaChangsha Chengfa Group Xiangxing Construction Company, Changsha, Hunan 410114, ChinaChangsha Chengfa Group Xiangxing Construction Company, Changsha, Hunan 410114, ChinaChangsha Xiangjiang Comprehensive Hub Development Co., Ltd, Changsha, Hunan 410114, ChinaChangsha University of Science & Technology Testing and Consulting Co., Ltd. Changsha, Hunan 410114, China; Corresponding author.Changsha Nuclear Industry Engineering Survey Institute Co., Ltd, Changsha, Hunan 410114, ChinaThis study investigated the feasibility of waste plastic/bio-oil modified asphalt (PBMA). The rheological behavior and micromorphology of PBMA were investigated. The results demonstrated that PBMA exhibited better storage stability. As the bio-oil content was 10 %, increasing the waste plastic dosage from 9 % to 12 % and 15 % resulted in a viscosity increase of 43mPa·s and 85mPa·s. The addition of waste plastic significantly improved the high-temperature rutting resistance, as reflected by the increased rutting index, higher recovery rate, and lower Jnr. However, the waste plastic negatively affected the low-temperature performance. As the waste plastic content was 12 %, increasing the bio-oil dosage from 12 % to 15 %, the m-value of PBMA increased by 16 %, and the stiffness modulus decreased by 11.6 %. The bio-oil enhanced the crack resistance of asphalt at −18°C. Compared to neat asphalt, the fatigue behavior of PBMA showed a substantial improvement. When the bio-oil dosage was 10 %, the optimal dosage of waste plastic should be set at 12 %. As the bio-oil dosage was 15 %, the waste plastic dosage should be increased to 15 %. The uniform dispersion of fluorescent structures was observed in PBMA 12–10 and PBMA 15–15, indicating complete dissolution of waste plastic in bio-asphalt. The SEM micromorphology indicated that the three-dimensional network appeared in modified asphalt. The utilization of waste plastic and bio-oil in modified asphalt promotes sustainable practices in road construction.http://www.sciencedirect.com/science/article/pii/S2214509525004577Modified asphaltWaste plasticBio-oilRheology behaviorMicromorphology |
| spellingShingle | Libo Zhou Zhenliang Huang Wei Tang Yishan Lin Ping Zhang Jianghua Yi Investigation of the rheological properties and micromorphology of waste plastic/bio-oil modified asphalt Case Studies in Construction Materials Modified asphalt Waste plastic Bio-oil Rheology behavior Micromorphology |
| title | Investigation of the rheological properties and micromorphology of waste plastic/bio-oil modified asphalt |
| title_full | Investigation of the rheological properties and micromorphology of waste plastic/bio-oil modified asphalt |
| title_fullStr | Investigation of the rheological properties and micromorphology of waste plastic/bio-oil modified asphalt |
| title_full_unstemmed | Investigation of the rheological properties and micromorphology of waste plastic/bio-oil modified asphalt |
| title_short | Investigation of the rheological properties and micromorphology of waste plastic/bio-oil modified asphalt |
| title_sort | investigation of the rheological properties and micromorphology of waste plastic bio oil modified asphalt |
| topic | Modified asphalt Waste plastic Bio-oil Rheology behavior Micromorphology |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525004577 |
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