Surface modified slag fiber reinforced asphalt mixture: Enhancement of pavement performance and field validation
The development of fiber reinforced asphalt mixture alleviates pavement distress and damage, extending the service life of asphalt pavements; however, the weak fiber/asphalt interface adhesion may limit its wider adoption in practical scenarios. We developed a fiber reinforced asphalt mixture utiliz...
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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/S2214509525003031 |
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| author | Mingen Fei Qingbing Cai Weijian Wu Xiaoqian Yan Huilong Zhao Kunming Yu Huaye Yu Shuyi Wu Xiaoyan Zheng Wendi Liu Renhui Qiu |
| author_facet | Mingen Fei Qingbing Cai Weijian Wu Xiaoqian Yan Huilong Zhao Kunming Yu Huaye Yu Shuyi Wu Xiaoyan Zheng Wendi Liu Renhui Qiu |
| author_sort | Mingen Fei |
| collection | DOAJ |
| description | The development of fiber reinforced asphalt mixture alleviates pavement distress and damage, extending the service life of asphalt pavements; however, the weak fiber/asphalt interface adhesion may limit its wider adoption in practical scenarios. We developed a fiber reinforced asphalt mixture utilizing slag fibers derived from solid waste as a novel solution for waste management. The surface of the slag fibers was modified with silane coupling agents to enhance the interface adhesion between the fiber and the asphalt matrix. Both molecular dynamics simulation and experimental results confirmed the effectiveness of the surface modification, showing increased interfacial compatibility and adhesion. The optimized fiber contents for asphalt mixtures were determined through Marshall tests, indicating that 0.3 wt% of modified short slag fiber or 0.4 wt% of modified long slag fiber yielded the most favorable results. The road performance of asphalt mixture was significantly improved, with increases of > 11.8 % in indirect tensile strength, > 22.5 % in dynamic stability, and > 10.7 % in flexural tensile strength at low temperatures. A great improvement in the stability of the asphalt mixture was achieved under varying temperatures. The robust fiber/asphalt interface allows stress to be easily transferred and enables the asphalt to be tightly absorbed by the fibers, stabilizing the asphalt mixture. After 10 months of service, field evaluations showed minimal deflection and few defects, confirming the practicality and durability of the modified slag fiber reinforced asphalt mixtures. This study offers a feasible and effective way to enhance asphalt pavement performance while addressing solid waste management issues. |
| format | Article |
| id | doaj-art-659f5f25a45f441bb49508acea8092d9 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-659f5f25a45f441bb49508acea8092d92025-08-20T03:42:37ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0450510.1016/j.cscm.2025.e04505Surface modified slag fiber reinforced asphalt mixture: Enhancement of pavement performance and field validationMingen Fei0Qingbing Cai1Weijian Wu2Xiaoqian Yan3Huilong Zhao4Kunming Yu5Huaye Yu6Shuyi Wu7Xiaoyan Zheng8Wendi Liu9Renhui Qiu10College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, ChinaCollege of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, ChinaCollege of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, ChinaCollege of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, ChinaNanping Highway Industrial Development Center, Nanping, Fujian 353099, ChinaNanping Highway Industrial Development Center, Nanping, Fujian 353099, ChinaCollege of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, ChinaCollege of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, ChinaCollege of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, ChinaCollege of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China; Corresponding authors.College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China; Corresponding authors.The development of fiber reinforced asphalt mixture alleviates pavement distress and damage, extending the service life of asphalt pavements; however, the weak fiber/asphalt interface adhesion may limit its wider adoption in practical scenarios. We developed a fiber reinforced asphalt mixture utilizing slag fibers derived from solid waste as a novel solution for waste management. The surface of the slag fibers was modified with silane coupling agents to enhance the interface adhesion between the fiber and the asphalt matrix. Both molecular dynamics simulation and experimental results confirmed the effectiveness of the surface modification, showing increased interfacial compatibility and adhesion. The optimized fiber contents for asphalt mixtures were determined through Marshall tests, indicating that 0.3 wt% of modified short slag fiber or 0.4 wt% of modified long slag fiber yielded the most favorable results. The road performance of asphalt mixture was significantly improved, with increases of > 11.8 % in indirect tensile strength, > 22.5 % in dynamic stability, and > 10.7 % in flexural tensile strength at low temperatures. A great improvement in the stability of the asphalt mixture was achieved under varying temperatures. The robust fiber/asphalt interface allows stress to be easily transferred and enables the asphalt to be tightly absorbed by the fibers, stabilizing the asphalt mixture. After 10 months of service, field evaluations showed minimal deflection and few defects, confirming the practicality and durability of the modified slag fiber reinforced asphalt mixtures. This study offers a feasible and effective way to enhance asphalt pavement performance while addressing solid waste management issues.http://www.sciencedirect.com/science/article/pii/S2214509525003031Slag fiberFiber reinforced asphaltMolecular dynamics simulationRoad PerformanceOn-site paving |
| spellingShingle | Mingen Fei Qingbing Cai Weijian Wu Xiaoqian Yan Huilong Zhao Kunming Yu Huaye Yu Shuyi Wu Xiaoyan Zheng Wendi Liu Renhui Qiu Surface modified slag fiber reinforced asphalt mixture: Enhancement of pavement performance and field validation Case Studies in Construction Materials Slag fiber Fiber reinforced asphalt Molecular dynamics simulation Road Performance On-site paving |
| title | Surface modified slag fiber reinforced asphalt mixture: Enhancement of pavement performance and field validation |
| title_full | Surface modified slag fiber reinforced asphalt mixture: Enhancement of pavement performance and field validation |
| title_fullStr | Surface modified slag fiber reinforced asphalt mixture: Enhancement of pavement performance and field validation |
| title_full_unstemmed | Surface modified slag fiber reinforced asphalt mixture: Enhancement of pavement performance and field validation |
| title_short | Surface modified slag fiber reinforced asphalt mixture: Enhancement of pavement performance and field validation |
| title_sort | surface modified slag fiber reinforced asphalt mixture enhancement of pavement performance and field validation |
| topic | Slag fiber Fiber reinforced asphalt Molecular dynamics simulation Road Performance On-site paving |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525003031 |
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