Effect of Polymers on Permanent Deformation of Flexible Pavement
The permanent deformation of flexible pavement represent serious problem in hot climate region. Numerous efforts are devoted to mitigate this distress such as modifying asphalt binder by polymers. The present study demonstrate the effect of utilizing four types of polymers to reduce the permanent d...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2023-07-01
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| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2597 |
| _version_ | 1797779190230024192 |
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| author | Hamid Mahmoud Hamdou Mohammed Qadir Ismael Mohammed Assi Abed |
| author_facet | Hamid Mahmoud Hamdou Mohammed Qadir Ismael Mohammed Assi Abed |
| author_sort | Hamid Mahmoud Hamdou |
| collection | DOAJ |
| description |
The permanent deformation of flexible pavement represent serious problem in hot climate region. Numerous efforts are devoted to mitigate this distress such as modifying asphalt binder by polymers. The present study demonstrate the effect of utilizing four types of polymers to reduce the permanent deformation, these polymers are Polyethylene Wax (PEW), Styrene Butadiene Rubber (SBR), Ethylene Propylene Dien Monomer (EPDM) and Ethylene Vinyl Acetate (EVA). The prepared mixtures composed of 4.9 % of 40/50 asphalt binder, 12.5 mm nominal aggregate maximum size and limestone dust as filler. The permanent and resilient strains have been recorded when the cylindrical specimens, 101.6 mm in diameter and 203.2 mm in height, tested by repeated loading system. The main conclusions exhibit that SBR and EPDM with the same concentration (15 % by weight of asphalt binder) reduced the permanent deformation by 30.20 % and 30.46 % respectively. Although, the PEW and EVA reduced permanent deformation by lower values, 13.24 % and 17.35 % respectively, but the incremental percentage of their action are higher. The influences of testing temperature and stress level on permanent deformation were investigated. Linear regression model was established to correlate the values of permanent deformation and the resilient modulus of asphalt mixtures.
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| first_indexed | 2024-03-12T23:28:04Z |
| format | Article |
| id | doaj.art-5e026b19defc4c69940bd100259784af |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-12T23:28:04Z |
| publishDate | 2023-07-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-5e026b19defc4c69940bd100259784af2023-07-15T18:38:03ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392023-07-01201210.31026/j.eng.2014.12.10Effect of Polymers on Permanent Deformation of Flexible PavementHamid Mahmoud HamdouMohammed Qadir IsmaelMohammed Assi Abed The permanent deformation of flexible pavement represent serious problem in hot climate region. Numerous efforts are devoted to mitigate this distress such as modifying asphalt binder by polymers. The present study demonstrate the effect of utilizing four types of polymers to reduce the permanent deformation, these polymers are Polyethylene Wax (PEW), Styrene Butadiene Rubber (SBR), Ethylene Propylene Dien Monomer (EPDM) and Ethylene Vinyl Acetate (EVA). The prepared mixtures composed of 4.9 % of 40/50 asphalt binder, 12.5 mm nominal aggregate maximum size and limestone dust as filler. The permanent and resilient strains have been recorded when the cylindrical specimens, 101.6 mm in diameter and 203.2 mm in height, tested by repeated loading system. The main conclusions exhibit that SBR and EPDM with the same concentration (15 % by weight of asphalt binder) reduced the permanent deformation by 30.20 % and 30.46 % respectively. Although, the PEW and EVA reduced permanent deformation by lower values, 13.24 % and 17.35 % respectively, but the incremental percentage of their action are higher. The influences of testing temperature and stress level on permanent deformation were investigated. Linear regression model was established to correlate the values of permanent deformation and the resilient modulus of asphalt mixtures. https://joe.uobaghdad.edu.iq/index.php/main/article/view/2597asphalt pavement, permanent deformation, polymers, resilient modulus |
| spellingShingle | Hamid Mahmoud Hamdou Mohammed Qadir Ismael Mohammed Assi Abed Effect of Polymers on Permanent Deformation of Flexible Pavement Journal of Engineering asphalt pavement, permanent deformation, polymers, resilient modulus |
| title | Effect of Polymers on Permanent Deformation of Flexible Pavement |
| title_full | Effect of Polymers on Permanent Deformation of Flexible Pavement |
| title_fullStr | Effect of Polymers on Permanent Deformation of Flexible Pavement |
| title_full_unstemmed | Effect of Polymers on Permanent Deformation of Flexible Pavement |
| title_short | Effect of Polymers on Permanent Deformation of Flexible Pavement |
| title_sort | effect of polymers on permanent deformation of flexible pavement |
| topic | asphalt pavement, permanent deformation, polymers, resilient modulus |
| url | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2597 |
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