Mix design of large-stone asphalt mixtures for heavy-traffic roads
| العنوان: | Mix design of large-stone asphalt mixtures for heavy-traffic roads |
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| المؤلفون: | Zila Maria Garcia Mascarenhas, Igor Amorim Beja, Kamilla Vasconcelos, Liedi Bernucci |
| المصدر: | Acta Scientiarum. Technology; Vol 45 (2023): Publicação contínua; e59011 Acta Scientiarum. Technology; v. 45 (2023): Publicação contínua; e59011 Acta scientiarum. Technology Universidade Estadual de Maringá (UEM) instacron:UEM |
| بيانات النشر: | Universidade Estadual De Maringá, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | General Computer Science, General Mathematics, General Engineering, General Earth and Planetary Sciences, General Physics and Astronomy, General Chemistry, LSAM, asphalt mix design, compaction methods, locking point |
| الوصف: | Heavy traffic and high temperatures are a common cause of rutting in paved areas, which reduces the time needed between pavement maintenance interventions. Large-stone asphalt mixtures (LSAMs) can reduce rutting when used as intermediate layers in pavement rehabilitation. LSAM is asphalt concrete with a nominal maximum aggregate size of at least 25 mm. In this study, we provide a brief literature review of the historical use of LSAMs, as well as the relevant characteristics of LSAM design. Three LSAMs were designed using different compaction methods: (i) Marshall compaction; (ii) rolling compaction; and (iii) Superpave gyratory compaction (SGC) by varying the compaction energy in 75, 100, and 125 gyrations. Depending on the mix design method used, the designed asphalt content ranged from 3.0 to 4.3%. The locking point from the SGC was evaluated at different gyratory compaction energies, which were related to the porosity of the dominant aggregate size range. These parameters are considered to be of great value when evaluating the LSAM design. Heavy traffic and high temperatures are a common cause of rutting in paved areas, which reduces the time needed between pavement maintenance interventions. Large-stone asphalt mixtures (LSAMs) can reduce rutting when used as intermediate layers in pavement rehabilitation. LSAM is asphalt concrete with a nominal maximum aggregate size of at least 25 mm. In this study, we provide a brief literature review of the historical use of LSAMs, as well as the relevant characteristics of LSAM design. Three LSAMs were designed using different compaction methods: (i) Marshall compaction; (ii) rolling compaction; and (iii) Superpave gyratory compaction (SGC) by varying the compaction energy in 75, 100, and 125 gyrations. Depending on the mix design method used, the designed asphalt content ranged from 3.0 to 4.3%. The locking point from the SGC was evaluated at different gyratory compaction energies, which were related to the porosity of the dominant aggregate size range. These parameters are considered to be of great value when evaluating the LSAM design. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1806-2563 1807-8664 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f20c66825b3c76c35308f3500715441cTest http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/59011Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f20c66825b3c76c35308f3500715441c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18062563 18078664 |
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