Polyurethane-modified asphalt mechanism
With the increasing development of transportation, the demands for the performance and lifespan of asphalt used in road construction have become increasingly stringent. However, most current road asphalt materials exhibit deficiencies in durability. To address the issue of insufficient durability in...
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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/S2214509525000464 |
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| author | Pengzhen Lu Changjun He Jiahao Wang Ying Wu Jiarui Ding |
| author_facet | Pengzhen Lu Changjun He Jiahao Wang Ying Wu Jiarui Ding |
| author_sort | Pengzhen Lu |
| collection | DOAJ |
| description | With the increasing development of transportation, the demands for the performance and lifespan of asphalt used in road construction have become increasingly stringent. However, most current road asphalt materials exhibit deficiencies in durability. To address the issue of insufficient durability in road asphalt, this paper introduces a novel polymer-modified asphalt utilizing polyurethane as a modifier and investigates the modification mechanism of this asphalt. The feasibility of using polyurethane as a modifier and its effects on matrix asphalt were analyzed using scanning electron microscopy, Fourier transform infrared spectroscopy, and atomic force microscopy. Additionally, molecular dynamics simulations were employed to analyze the radial distribution function, adhesion energy, and cohesive energy density of asphalt before and after the addition of polyurethane at the microscopic structural level, revealing the molecular motion trends and interfacial bonding forces of the four components of asphalt.The results indicate that the incorporation of polyurethane leads to changes in the absorption peaks of matrix asphalt, a reduction in the ''honeycomb'' structure, and shrinkage. Simultaneously, improvements were observed in the radial distribution function, adhesion energy, and cohesive energy density. These findings suggest that a chemical reaction occurs between polyurethane and matrix asphalt, and the addition of polyurethane effectively enhances the orderliness of asphalt molecules and the interfacial bonding performance. |
| format | Article |
| id | doaj-art-e48a3faec5be45e985ee0ea0029807d7 |
| 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-e48a3faec5be45e985ee0ea0029807d72025-01-19T06:25:02ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04247Polyurethane-modified asphalt mechanismPengzhen Lu0Changjun He1Jiahao Wang2Ying Wu3Jiarui Ding4School of Civil Engineering，Zhejiang University of Technology, Hangzhou 310014, ChinaSchool of Civil Engineering，Zhejiang University of Technology, Hangzhou 310014, ChinaSchool of Civil Engineering，Zhejiang University of Technology, Hangzhou 310014, ChinaSchool of information Engineering，Jiaxing Nanhu University, Jiaxing, Zhejiang 314001, China; Corresponding author.School of Civil Engineering，Zhejiang University of Technology, Hangzhou 310014, ChinaWith the increasing development of transportation, the demands for the performance and lifespan of asphalt used in road construction have become increasingly stringent. However, most current road asphalt materials exhibit deficiencies in durability. To address the issue of insufficient durability in road asphalt, this paper introduces a novel polymer-modified asphalt utilizing polyurethane as a modifier and investigates the modification mechanism of this asphalt. The feasibility of using polyurethane as a modifier and its effects on matrix asphalt were analyzed using scanning electron microscopy, Fourier transform infrared spectroscopy, and atomic force microscopy. Additionally, molecular dynamics simulations were employed to analyze the radial distribution function, adhesion energy, and cohesive energy density of asphalt before and after the addition of polyurethane at the microscopic structural level, revealing the molecular motion trends and interfacial bonding forces of the four components of asphalt.The results indicate that the incorporation of polyurethane leads to changes in the absorption peaks of matrix asphalt, a reduction in the ''honeycomb'' structure, and shrinkage. Simultaneously, improvements were observed in the radial distribution function, adhesion energy, and cohesive energy density. These findings suggest that a chemical reaction occurs between polyurethane and matrix asphalt, and the addition of polyurethane effectively enhances the orderliness of asphalt molecules and the interfacial bonding performance.http://www.sciencedirect.com/science/article/pii/S2214509525000464Polymer modified asphaltPolyurethaneModification mechanismMolecular dynamicsInterface bonding |
| spellingShingle | Pengzhen Lu Changjun He Jiahao Wang Ying Wu Jiarui Ding Polyurethane-modified asphalt mechanism Case Studies in Construction Materials Polymer modified asphalt Polyurethane Modification mechanism Molecular dynamics Interface bonding |
| title | Polyurethane-modified asphalt mechanism |
| title_full | Polyurethane-modified asphalt mechanism |
| title_fullStr | Polyurethane-modified asphalt mechanism |
| title_full_unstemmed | Polyurethane-modified asphalt mechanism |
| title_short | Polyurethane-modified asphalt mechanism |
| title_sort | polyurethane modified asphalt mechanism |
| topic | Polymer modified asphalt Polyurethane Modification mechanism Molecular dynamics Interface bonding |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525000464 |
| work_keys_str_mv | AT pengzhenlu polyurethanemodifiedasphaltmechanism AT changjunhe polyurethanemodifiedasphaltmechanism AT jiahaowang polyurethanemodifiedasphaltmechanism AT yingwu polyurethanemodifiedasphaltmechanism AT jiaruiding polyurethanemodifiedasphaltmechanism |