Physical, Rheological, And Microsurface Characteristics of High-Viscosity Binder Modified with WMA Agents
In order to investigate the feasibility of warm mix technology in high-viscosity asphalt mixes, in the current experiment, Shell 70 Grade A asphalt (base asphalt) was modified by AR-HVA (a high-viscosity modifier), and the high-viscosity modified asphalt was further incorporated with two surface-act...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/5098250 |
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| author | Junhui Luo Yuzhu Yang Weirong Huang Cheng Xie Jiangcai Chen Haobin Liu Tianzeng Ren Xiaofeng Huang |
| author_facet | Junhui Luo Yuzhu Yang Weirong Huang Cheng Xie Jiangcai Chen Haobin Liu Tianzeng Ren Xiaofeng Huang |
| author_sort | Junhui Luo |
| collection | DOAJ |
| description | In order to investigate the feasibility of warm mix technology in high-viscosity asphalt mixes, in the current experiment, Shell 70 Grade A asphalt (base asphalt) was modified by AR-HVA (a high-viscosity modifier), and the high-viscosity modified asphalt was further incorporated with two surface-active warm mixes (Evotherm M1 and Retherm). The physical properties of the high-viscosity warm mix-modified asphalts were analyzed by dynamic and Brinell viscosity tests. The compatibility of the warm mixes with the high-viscosity modified and the base asphalt was analyzed by fluorescence microscopy. The modification mechanism of the high-viscosity warm mix-modified asphalts was revealed by Fourier-transform infrared spectroscopy. The high-viscosity modifier significantly reduced the penetration of the matrix asphalt and increased its softening point and 5°C ductility, whereas the two warm mixes increased the penetration and ductility of the high-viscosity modified asphalt and reduced its softening point. The surface-active warm mixes reduced the 60°C viscosity of the asphalt, and the viscosity reduction effect of M1 was better than that of Retherm. The high-viscosity modifier AR-HVA was well dispersed in the asphalt; however, its continuity was not good. The addition of the surface-active warm mixes effectively enhanced the continuity of the high-viscosity AR-HVA-modified asphalt. Infrared spectroscopy revealed little difference between the main components of the matrix asphalt and the high-viscosity asphalt. The addition of the surface-active warm mixes altered the amounts of four components in bitumen and increased its aromatic content. |
| format | Article |
| id | doaj-art-ac810d8b9e9f4ae1abc3332042aa7810 |
| institution | Kabale University |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-ac810d8b9e9f4ae1abc3332042aa78102025-02-03T06:14:13ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/5098250Physical, Rheological, And Microsurface Characteristics of High-Viscosity Binder Modified with WMA AgentsJunhui Luo0Yuzhu Yang1Weirong Huang2Cheng Xie3Jiangcai Chen4Haobin Liu5Tianzeng Ren6Xiaofeng Huang7Guangxi Beitou Transportation Maintenance Technology Group Co. Ltd.School of Materials Science and EngineeringSchool of Materials Science and EngineeringGuangxi Beitou Transportation Maintenance Technology Group Co. Ltd.Guangxi Beitou Transportation Maintenance Technology Group Co. Ltd.Guangxi Beitou Transportation Maintenance Technology Group Co. Ltd.Guangxi Beitou Transportation Maintenance Technology Group Co. Ltd.Guangxi Beitou Transportation Maintenance Technology Group Co. Ltd.In order to investigate the feasibility of warm mix technology in high-viscosity asphalt mixes, in the current experiment, Shell 70 Grade A asphalt (base asphalt) was modified by AR-HVA (a high-viscosity modifier), and the high-viscosity modified asphalt was further incorporated with two surface-active warm mixes (Evotherm M1 and Retherm). The physical properties of the high-viscosity warm mix-modified asphalts were analyzed by dynamic and Brinell viscosity tests. The compatibility of the warm mixes with the high-viscosity modified and the base asphalt was analyzed by fluorescence microscopy. The modification mechanism of the high-viscosity warm mix-modified asphalts was revealed by Fourier-transform infrared spectroscopy. The high-viscosity modifier significantly reduced the penetration of the matrix asphalt and increased its softening point and 5°C ductility, whereas the two warm mixes increased the penetration and ductility of the high-viscosity modified asphalt and reduced its softening point. The surface-active warm mixes reduced the 60°C viscosity of the asphalt, and the viscosity reduction effect of M1 was better than that of Retherm. The high-viscosity modifier AR-HVA was well dispersed in the asphalt; however, its continuity was not good. The addition of the surface-active warm mixes effectively enhanced the continuity of the high-viscosity AR-HVA-modified asphalt. Infrared spectroscopy revealed little difference between the main components of the matrix asphalt and the high-viscosity asphalt. The addition of the surface-active warm mixes altered the amounts of four components in bitumen and increased its aromatic content.http://dx.doi.org/10.1155/2022/5098250 |
| spellingShingle | Junhui Luo Yuzhu Yang Weirong Huang Cheng Xie Jiangcai Chen Haobin Liu Tianzeng Ren Xiaofeng Huang Physical, Rheological, And Microsurface Characteristics of High-Viscosity Binder Modified with WMA Agents Advances in Materials Science and Engineering |
| title | Physical, Rheological, And Microsurface Characteristics of High-Viscosity Binder Modified with WMA Agents |
| title_full | Physical, Rheological, And Microsurface Characteristics of High-Viscosity Binder Modified with WMA Agents |
| title_fullStr | Physical, Rheological, And Microsurface Characteristics of High-Viscosity Binder Modified with WMA Agents |
| title_full_unstemmed | Physical, Rheological, And Microsurface Characteristics of High-Viscosity Binder Modified with WMA Agents |
| title_short | Physical, Rheological, And Microsurface Characteristics of High-Viscosity Binder Modified with WMA Agents |
| title_sort | physical rheological and microsurface characteristics of high viscosity binder modified with wma agents |
| url | http://dx.doi.org/10.1155/2022/5098250 |
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