Improvement of permanent deformation and fatigue life of bituminous mixtures by using modified bitumens
This paper describes the results of a study aiming the evaluation of pavement performance improvement by using a polymer modified bitumen as binder. Two dense graded bituminous mixtures were produced in laboratory. The first one was produced with conventional bitumen and the second one with polymer-...
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| Other Authors: | , |
| Format: | conferencePaper |
| Language: | eng |
| Published: |
2000
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| Subjects: | |
| Online Access: | http://hdl.handle.net/1822/14210 |
| Country: | Portugal |
| Oai: | oai:repositorium.sdum.uminho.pt:1822/14210 |
| Summary: | This paper describes the results of a study aiming the evaluation of pavement performance improvement by using a polymer modified bitumen as binder. Two dense graded bituminous mixtures were produced in laboratory. The first one was produced with conventional bitumen and the second one with polymer-modified bitumen. Permanent deformation tests were carried out in a shear servo-hydraulic machine using the repetitive simple shear test at constant height. Fatigue life tests were carried out in an axial servo-hydraulic testing system using a flexural beam. A comparison between these two mixtures was made for tensile strains calculated for a typical flexible pavement structure where these two mixtures were considered. |
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