Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory Study
The paper introduces and analyses the results of an experimental trial on the fatigue resistance of recycled hot mix asphalt for road pavements. Based on the gyratory compaction and the indirect tensile strength test, the mix design procedure has optimized nine different mixes, considering both conv...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/4397957 |
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| author | Marco Pasetto Nicola Baldo |
| author_facet | Marco Pasetto Nicola Baldo |
| author_sort | Marco Pasetto |
| collection | DOAJ |
| description | The paper introduces and analyses the results of an experimental trial on the fatigue resistance of recycled hot mix asphalt for road pavements. Based on the gyratory compaction and the indirect tensile strength test, the mix design procedure has optimized nine different mixes, considering both conventional limestone and Reclaimed Asphalt Pavement (RAP), the latter used at different quantities, up to 40% by weight of the aggregate. A standard bitumen and two polymer modified binders were used for the production of the mixes. The fatigue study was carried out with four-point bending tests, each one performed at 20°C and 10 Hz. The empirical stiffness reduction method, along with the energy ratio approach, based on the dissipated energy concept, was adopted to elaborate the experimental data. Unaged and aged specimens were checked, to analyse the ageing effects on the fatigue performance. In comparison with the control mixes, produced only with limestone, improved fatigue performance was noticed for the mixtures prepared with RAP, especially when made with polymer modified binders, under both aged and unaged conditions. Both the approaches adopted for the experimental data analysis have outlined the same ranking of the mixes. |
| format | Article |
| id | doaj-art-a5745311a1144a678baff3d6be70eda1 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-a5745311a1144a678baff3d6be70eda12025-02-03T01:10:39ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/43979574397957Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory StudyMarco Pasetto0Nicola Baldo1Department of Civil, Environmental and Architectural Engineering, University of Padua, Via Marzolo 9, 35131 Padua, ItalyPolytechnic Department of Engineering and Architecture, University of Udine, Via del Cotonificio 114, 33100 Udine, ItalyThe paper introduces and analyses the results of an experimental trial on the fatigue resistance of recycled hot mix asphalt for road pavements. Based on the gyratory compaction and the indirect tensile strength test, the mix design procedure has optimized nine different mixes, considering both conventional limestone and Reclaimed Asphalt Pavement (RAP), the latter used at different quantities, up to 40% by weight of the aggregate. A standard bitumen and two polymer modified binders were used for the production of the mixes. The fatigue study was carried out with four-point bending tests, each one performed at 20°C and 10 Hz. The empirical stiffness reduction method, along with the energy ratio approach, based on the dissipated energy concept, was adopted to elaborate the experimental data. Unaged and aged specimens were checked, to analyse the ageing effects on the fatigue performance. In comparison with the control mixes, produced only with limestone, improved fatigue performance was noticed for the mixtures prepared with RAP, especially when made with polymer modified binders, under both aged and unaged conditions. Both the approaches adopted for the experimental data analysis have outlined the same ranking of the mixes.http://dx.doi.org/10.1155/2017/4397957 |
| spellingShingle | Marco Pasetto Nicola Baldo Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory Study Advances in Materials Science and Engineering |
| title | Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory Study |
| title_full | Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory Study |
| title_fullStr | Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory Study |
| title_full_unstemmed | Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory Study |
| title_short | Fatigue Performance of Recycled Hot Mix Asphalt: A Laboratory Study |
| title_sort | fatigue performance of recycled hot mix asphalt a laboratory study |
| url | http://dx.doi.org/10.1155/2017/4397957 |
| work_keys_str_mv | AT marcopasetto fatigueperformanceofrecycledhotmixasphaltalaboratorystudy AT nicolabaldo fatigueperformanceofrecycledhotmixasphaltalaboratorystudy |