Modelling of the Inverse Creep of Road Bitumen Modified With SBS Copolymer
Polymer modified road bitumens, being examples of viscoelastic materials, are very interesting with respect to rheology. The phenomenon of inverse creep (retarded strain recovery) observed in samples of asphalt binders modified by the addition of SBS copolymer was analyzed in the present paper. Labo...
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| Format: | Article |
| Language: | English |
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RTU Press
2012-03-01
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| Series: | The Baltic Journal of Road and Bridge Engineering |
| Subjects: | |
| Online Access: | https://bjrbe-journals.rtu.lv/article/view/3599 |
| _version_ | 1818881313330954240 |
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| author | Mieczysław Słowik |
| author_facet | Mieczysław Słowik |
| author_sort | Mieczysław Słowik |
| collection | DOAJ |
| description | Polymer modified road bitumens, being examples of viscoelastic materials, are very interesting with respect to rheology. The phenomenon of inverse creep (retarded strain recovery) observed in samples of asphalt binders modified by the addition of SBS copolymer was analyzed in the present paper. Laboratory tests of strain recovery were conducted on samples of the three selected asphalt binders: the 50/70 penetration grade base bitumen and binders modified by the addition of 4% and 8% of the SBS copolymer. The extended procedure for the determination of elastic recovery was used as the research method. The results of the experiment were approximated using three linear viscoelastic rheological models: Burgers, Dual Kelvin+Newton and Dual Kelvin+Maxwell. When analyzing the results of modelling carried out by using the Burgers model it has been found that they were not satisfactory. Much greater compatibility of modelling and experiment results (R2 > 0.99) was achieved by using models containing the dual Kelvin element. |
| first_indexed | 2024-12-19T14:59:53Z |
| format | Article |
| id | doaj.art-07732ccacb7343c9adbb77d8ccd976f0 |
| institution | Directory Open Access Journal |
| issn | 1822-427X 1822-4288 |
| language | English |
| last_indexed | 2024-12-19T14:59:53Z |
| publishDate | 2012-03-01 |
| publisher | RTU Press |
| record_format | Article |
| series | The Baltic Journal of Road and Bridge Engineering |
| spelling | doaj.art-07732ccacb7343c9adbb77d8ccd976f02022-12-21T20:16:35ZengRTU PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882012-03-0171687510.3846/bjrbe.2012.102008Modelling of the Inverse Creep of Road Bitumen Modified With SBS CopolymerMieczysław Słowik0Poznan University of Technology, Institute of Civil Engineering, 5, Piotrowo St., PL 61–138 Poznan, PolandPolymer modified road bitumens, being examples of viscoelastic materials, are very interesting with respect to rheology. The phenomenon of inverse creep (retarded strain recovery) observed in samples of asphalt binders modified by the addition of SBS copolymer was analyzed in the present paper. Laboratory tests of strain recovery were conducted on samples of the three selected asphalt binders: the 50/70 penetration grade base bitumen and binders modified by the addition of 4% and 8% of the SBS copolymer. The extended procedure for the determination of elastic recovery was used as the research method. The results of the experiment were approximated using three linear viscoelastic rheological models: Burgers, Dual Kelvin+Newton and Dual Kelvin+Maxwell. When analyzing the results of modelling carried out by using the Burgers model it has been found that they were not satisfactory. Much greater compatibility of modelling and experiment results (R2 > 0.99) was achieved by using models containing the dual Kelvin element.https://bjrbe-journals.rtu.lv/article/view/3599bitumencopolymerrheologyviscoelasticityrelaxationstrain recoveryinverse creep |
| spellingShingle | Mieczysław Słowik Modelling of the Inverse Creep of Road Bitumen Modified With SBS Copolymer The Baltic Journal of Road and Bridge Engineering bitumen copolymer rheology viscoelasticity relaxation strain recovery inverse creep |
| title | Modelling of the Inverse Creep of Road Bitumen Modified With SBS Copolymer |
| title_full | Modelling of the Inverse Creep of Road Bitumen Modified With SBS Copolymer |
| title_fullStr | Modelling of the Inverse Creep of Road Bitumen Modified With SBS Copolymer |
| title_full_unstemmed | Modelling of the Inverse Creep of Road Bitumen Modified With SBS Copolymer |
| title_short | Modelling of the Inverse Creep of Road Bitumen Modified With SBS Copolymer |
| title_sort | modelling of the inverse creep of road bitumen modified with sbs copolymer |
| topic | bitumen copolymer rheology viscoelasticity relaxation strain recovery inverse creep |
| url | https://bjrbe-journals.rtu.lv/article/view/3599 |
| work_keys_str_mv | AT mieczysławsłowik modellingoftheinversecreepofroadbitumenmodifiedwithsbscopolymer |