Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder
Cellulose microfibrils (CMFs) and micronized rubber powder (MRP) can be derived from low or negative-cost agricultural/industrial waste streams and offer environment-friendly and cost-effective pathways to develop engineering products. This study investigated the efficacy of adding these micromodifi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Fibers |
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| Online Access: | https://www.mdpi.com/2079-6439/9/4/25 |
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| author | Ang Li Abdu A. Danladi Rahul Vallabh Mohammed K. Yakubu Umar Ishiaku Thomas Theyson Abdel-Fattah M. Seyam |
| author_facet | Ang Li Abdu A. Danladi Rahul Vallabh Mohammed K. Yakubu Umar Ishiaku Thomas Theyson Abdel-Fattah M. Seyam |
| author_sort | Ang Li |
| collection | DOAJ |
| description | Cellulose microfibrils (CMFs) and micronized rubber powder (MRP) can be derived from low or negative-cost agricultural/industrial waste streams and offer environment-friendly and cost-effective pathways to develop engineering products. This study investigated the efficacy of adding these micromodifiers on the performance characteristics of asphalt binders. In this work, samples were produced using a mixture of slow-setting anionic asphalt emulsion with various combinations of MRP (at 0, 2 and 10 wt %) and four types of CMFs (hydrophobic and hydrophilic with crystalline ratios of 86% and 95%) at 0, 2 and 5 wt %. The performance of modified asphalt samples was assessed by penetration depth (PD), softening point (SP), and penetration index (PI). Linear regression analysis showed that adding CMFs and/or MRP reduced PD and increased SP values. The type of CMFs significantly affected the performance, which becomes more distinct with the increased weight content of CMFs. While hydrophilic CMFs caused increases in SP and PI values, no clear trend was seen to determine the effect of CMF crystallinity. It was also discovered that the combined addition of CMF and MRP achieved similar PI values at lower total weight content compared to using MRP alone. |
| first_indexed | 2024-03-10T12:32:13Z |
| format | Article |
| id | doaj.art-b556edcf41964b1aba120358d8993b1c |
| institution | Directory Open Access Journal |
| issn | 2079-6439 |
| language | English |
| last_indexed | 2024-03-10T12:32:13Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fibers |
| spelling | doaj.art-b556edcf41964b1aba120358d8993b1c2023-11-21T14:36:20ZengMDPI AGFibers2079-64392021-04-01942510.3390/fib9040025Cellulose Microfibril and Micronized Rubber Modified Asphalt BinderAng Li0Abdu A. Danladi1Rahul Vallabh2Mohammed K. Yakubu3Umar Ishiaku4Thomas Theyson5Abdel-Fattah M. Seyam6Wilson College of Textiles, North Carolina State University, Raleigh, NC 27606, USADepartment of Polymer and Textile Engineering, Ahmadu Bello University, Zaria 810107, NigeriaWilson College of Textiles, North Carolina State University, Raleigh, NC 27606, USADepartment of Polymer and Textile Engineering, Ahmadu Bello University, Zaria 810107, NigeriaDepartment of Polymer and Textile Engineering, Ahmadu Bello University, Zaria 810107, NigeriaWilson College of Textiles, North Carolina State University, Raleigh, NC 27606, USAWilson College of Textiles, North Carolina State University, Raleigh, NC 27606, USACellulose microfibrils (CMFs) and micronized rubber powder (MRP) can be derived from low or negative-cost agricultural/industrial waste streams and offer environment-friendly and cost-effective pathways to develop engineering products. This study investigated the efficacy of adding these micromodifiers on the performance characteristics of asphalt binders. In this work, samples were produced using a mixture of slow-setting anionic asphalt emulsion with various combinations of MRP (at 0, 2 and 10 wt %) and four types of CMFs (hydrophobic and hydrophilic with crystalline ratios of 86% and 95%) at 0, 2 and 5 wt %. The performance of modified asphalt samples was assessed by penetration depth (PD), softening point (SP), and penetration index (PI). Linear regression analysis showed that adding CMFs and/or MRP reduced PD and increased SP values. The type of CMFs significantly affected the performance, which becomes more distinct with the increased weight content of CMFs. While hydrophilic CMFs caused increases in SP and PI values, no clear trend was seen to determine the effect of CMF crystallinity. It was also discovered that the combined addition of CMF and MRP achieved similar PI values at lower total weight content compared to using MRP alone.https://www.mdpi.com/2079-6439/9/4/25cellulose microfibrilmicronized rubber powderasphalt binderpenetration depthsoftening pointpenetration index |
| spellingShingle | Ang Li Abdu A. Danladi Rahul Vallabh Mohammed K. Yakubu Umar Ishiaku Thomas Theyson Abdel-Fattah M. Seyam Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder Fibers cellulose microfibril micronized rubber powder asphalt binder penetration depth softening point penetration index |
| title | Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder |
| title_full | Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder |
| title_fullStr | Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder |
| title_full_unstemmed | Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder |
| title_short | Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder |
| title_sort | cellulose microfibril and micronized rubber modified asphalt binder |
| topic | cellulose microfibril micronized rubber powder asphalt binder penetration depth softening point penetration index |
| url | https://www.mdpi.com/2079-6439/9/4/25 |
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