Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification
The storage stability concern, caused by phase separation for the density difference between polymers and asphalt fractions, has limited the widespread application of polymer modified asphalt (PMA). Therefore, this study aims to improve the storage concern of PMA by incorporating nano-montmorillonit...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/10/4/641 |
| _version_ | 1827719631396143104 |
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| author | Zhibin Ren Yongqiang Zhu Qi Wu Minye Zhu Feng Guo Huayang Yu Jiangmiao Yu |
| author_facet | Zhibin Ren Yongqiang Zhu Qi Wu Minye Zhu Feng Guo Huayang Yu Jiangmiao Yu |
| author_sort | Zhibin Ren |
| collection | DOAJ |
| description | The storage stability concern, caused by phase separation for the density difference between polymers and asphalt fractions, has limited the widespread application of polymer modified asphalt (PMA). Therefore, this study aims to improve the storage concern of PMA by incorporating nano-montmorillonite. To this end, different nano-montmorillonites were incorporated to three PMAs modified with three typical asphalt modifiers, i.e., crumb rubber (CRM), styrene–butadiene-rubber (SBR) and styrene–butadiene-styrene (SBS). A series of laboratory tests were performed to evaluate the storage stability and rheological properties of PMA binders with nano-montmorillonite. As a consequence, the incorporation of nano-montmorillonite exhibited a remarkable effect on enhancing the storage stability of the CRM modified binder, but limited positive effects for the SBR and SBS modified binders. The layered nano-montmorillonite transformed to intercalated or exfoliated structures after interaction with asphalt fractions, providing superior storage stability. Among selected nano-montmorillonites, the pure montmorillonite with Hydroxyl organic ammonium performed the best on enhancing storage stability of PMA. This paper suggests that nano-montmorillonite is a promising modifier to alleviate the storage stability concern for asphalt with polymer modifiers. |
| first_indexed | 2024-03-10T20:47:48Z |
| format | Article |
| id | doaj.art-5849608d9ce94eb5b3263a3ebd98b588 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T20:47:48Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-5849608d9ce94eb5b3263a3ebd98b5882023-11-19T20:09:03ZengMDPI AGNanomaterials2079-49912020-03-0110464110.3390/nano10040641Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite ModificationZhibin Ren0Yongqiang Zhu1Qi Wu2Minye Zhu3Feng Guo4Huayang Yu5Jiangmiao Yu6Research and Development Centre of Transport Industry of Technologies, Materials and Equipment of Highway Construction and Maintenance, Gansu Road and Bridge Group Co. Ltd., Lanzhou 730050, ChinaGuangdong Guanyue Highway & Bridge Co., Ltd., Guangzhou 510000, ChinaGuangdong Province Communications Planning & Design Institute Co., Ltd., Xinghua Road, Tianhe District, Guangzhou 510000, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Wushan Road, Tianhe District, Guangzhou 510000, ChinaDepartment of Civil Engineering and Environment, University of South Carolina, Columbia, SC 29208, USAKey Laboratory for Special Area Highway Engineering, Chang’an University, Xi’an 710064, ChinaSchool of Civil Engineering and Transportation, South China University of Technology, Wushan Road, Tianhe District, Guangzhou 510000, ChinaThe storage stability concern, caused by phase separation for the density difference between polymers and asphalt fractions, has limited the widespread application of polymer modified asphalt (PMA). Therefore, this study aims to improve the storage concern of PMA by incorporating nano-montmorillonite. To this end, different nano-montmorillonites were incorporated to three PMAs modified with three typical asphalt modifiers, i.e., crumb rubber (CRM), styrene–butadiene-rubber (SBR) and styrene–butadiene-styrene (SBS). A series of laboratory tests were performed to evaluate the storage stability and rheological properties of PMA binders with nano-montmorillonite. As a consequence, the incorporation of nano-montmorillonite exhibited a remarkable effect on enhancing the storage stability of the CRM modified binder, but limited positive effects for the SBR and SBS modified binders. The layered nano-montmorillonite transformed to intercalated or exfoliated structures after interaction with asphalt fractions, providing superior storage stability. Among selected nano-montmorillonites, the pure montmorillonite with Hydroxyl organic ammonium performed the best on enhancing storage stability of PMA. This paper suggests that nano-montmorillonite is a promising modifier to alleviate the storage stability concern for asphalt with polymer modifiers.https://www.mdpi.com/2079-4991/10/4/641storage stabilityrheological propertiespolymer-modified asphaltnano-montmorillonite |
| spellingShingle | Zhibin Ren Yongqiang Zhu Qi Wu Minye Zhu Feng Guo Huayang Yu Jiangmiao Yu Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification Nanomaterials storage stability rheological properties polymer-modified asphalt nano-montmorillonite |
| title | Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification |
| title_full | Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification |
| title_fullStr | Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification |
| title_full_unstemmed | Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification |
| title_short | Enhanced Storage Stability of Different Polymer Modified Asphalt Binders through Nano-Montmorillonite Modification |
| title_sort | enhanced storage stability of different polymer modified asphalt binders through nano montmorillonite modification |
| topic | storage stability rheological properties polymer-modified asphalt nano-montmorillonite |
| url | https://www.mdpi.com/2079-4991/10/4/641 |
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