High-Temperature Properties And Modeling of Asphalt Binders Modified with Sbr Copolymer and Ppa in the Multiple Stress Creep and Recovery (Mscr) Test
The main objectives of this paper are to (i) study the rutting performance of asphalt binders modified with styrene butadiene rubber (SBR) copolymer, polyphosphoric acid (PPA) and SBR+PPA, (ii) quantify the percent recoveries R and the nonrecoverable compliances Jnr in the multiple stress creep and...
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| Format: | Article |
| Language: | English |
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De Gruyter
2016-10-01
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| Series: | Applied Rheology |
| Subjects: | |
| Online Access: | https://doi.org/10.3933/applrheol-26-53830 |
| _version_ | 1818597903386542080 |
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| author | Domingos Matheus David Inocente Faxina Adalberto Leandro |
| author_facet | Domingos Matheus David Inocente Faxina Adalberto Leandro |
| author_sort | Domingos Matheus David Inocente |
| collection | DOAJ |
| description | The main objectives of this paper are to (i) study the rutting performance of asphalt binders modified with styrene butadiene rubber (SBR) copolymer, polyphosphoric acid (PPA) and SBR+PPA, (ii) quantify the percent recoveries R and the nonrecoverable compliances Jnr in the multiple stress creep and recovery (MSCR) test, and (iii) indicate the best formulations in terms of rutting performance. All these formulations have the same high-temperature performance grade in the Superpave® specification (PG 76-xx). The Burgers model was used to fit the laboratory data and the parameter GV was obtained from the model. The degrees of improvement in the R and the Jnr values after binder modification are higher for the AC+SBR+PPA and the AC+PPA than for the AC+SBR and the results are slightly better for the AC+SBR+PPA. The use of longer creep and recovery times led to increases in the stress sensitivity of the modified asphalt binders and in their rutting potential (higher Jnr values and lower R values) and these effects are more pronounced for the AC+SBR. The AC+SBR+PPA was identified as the best formulation in terms of elastic response and susceptibility to rutting, followed by the AC+PPA and the AC+SBR. |
| first_indexed | 2024-12-16T11:55:12Z |
| format | Article |
| id | doaj.art-e0cab9985ab743ab9ea47cc84dfcd86b |
| institution | Directory Open Access Journal |
| issn | 1617-8106 |
| language | English |
| last_indexed | 2024-12-16T11:55:12Z |
| publishDate | 2016-10-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Applied Rheology |
| spelling | doaj.art-e0cab9985ab743ab9ea47cc84dfcd86b2022-12-21T22:32:35ZengDe GruyterApplied Rheology1617-81062016-10-01265273510.3933/applrheol-26-53830High-Temperature Properties And Modeling of Asphalt Binders Modified with Sbr Copolymer and Ppa in the Multiple Stress Creep and Recovery (Mscr) TestDomingos Matheus David Inocente0Faxina Adalberto Leandro1Department of Transportation Engineering, Sao Carlos School of Engineering, University of Sao Paulo, Avenida Trabalhador Sao-Carlense, 400, Parque Arnold Schimidt,Sao Carlos, SP 13.566-590, BrazilDepartment of Transportation Engineering, Sao Carlos School of Engineering, University of Sao Paulo, Avenida Trabalhador Sao-Carlense, 400, Parque Arnold Schimidt,Sao Carlos, SP 13.566-590, BrazilThe main objectives of this paper are to (i) study the rutting performance of asphalt binders modified with styrene butadiene rubber (SBR) copolymer, polyphosphoric acid (PPA) and SBR+PPA, (ii) quantify the percent recoveries R and the nonrecoverable compliances Jnr in the multiple stress creep and recovery (MSCR) test, and (iii) indicate the best formulations in terms of rutting performance. All these formulations have the same high-temperature performance grade in the Superpave® specification (PG 76-xx). The Burgers model was used to fit the laboratory data and the parameter GV was obtained from the model. The degrees of improvement in the R and the Jnr values after binder modification are higher for the AC+SBR+PPA and the AC+PPA than for the AC+SBR and the results are slightly better for the AC+SBR+PPA. The use of longer creep and recovery times led to increases in the stress sensitivity of the modified asphalt binders and in their rutting potential (higher Jnr values and lower R values) and these effects are more pronounced for the AC+SBR. The AC+SBR+PPA was identified as the best formulation in terms of elastic response and susceptibility to rutting, followed by the AC+PPA and the AC+SBR.https://doi.org/10.3933/applrheol-26-53830asphalt binderspercent recoverynonrecoverable compliancesbr copolymerppaburgers model |
| spellingShingle | Domingos Matheus David Inocente Faxina Adalberto Leandro High-Temperature Properties And Modeling of Asphalt Binders Modified with Sbr Copolymer and Ppa in the Multiple Stress Creep and Recovery (Mscr) Test Applied Rheology asphalt binders percent recovery nonrecoverable compliance sbr copolymer ppa burgers model |
| title | High-Temperature Properties And Modeling of Asphalt Binders Modified with Sbr Copolymer and Ppa in the Multiple Stress Creep and Recovery (Mscr) Test |
| title_full | High-Temperature Properties And Modeling of Asphalt Binders Modified with Sbr Copolymer and Ppa in the Multiple Stress Creep and Recovery (Mscr) Test |
| title_fullStr | High-Temperature Properties And Modeling of Asphalt Binders Modified with Sbr Copolymer and Ppa in the Multiple Stress Creep and Recovery (Mscr) Test |
| title_full_unstemmed | High-Temperature Properties And Modeling of Asphalt Binders Modified with Sbr Copolymer and Ppa in the Multiple Stress Creep and Recovery (Mscr) Test |
| title_short | High-Temperature Properties And Modeling of Asphalt Binders Modified with Sbr Copolymer and Ppa in the Multiple Stress Creep and Recovery (Mscr) Test |
| title_sort | high temperature properties and modeling of asphalt binders modified with sbr copolymer and ppa in the multiple stress creep and recovery mscr test |
| topic | asphalt binders percent recovery nonrecoverable compliance sbr copolymer ppa burgers model |
| url | https://doi.org/10.3933/applrheol-26-53830 |
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