Gradation characteristics-based interlayer mixture design method for enhanced rutting resistance of asphalt pavements
| Autor: | Bongsuk Park, Sanghyun Chun, Cristian Cocconcelli |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Canadian Journal of Civil Engineering. 49:607-616 |
| ISSN: | 1208-6029 0315-1468 |
| Popis: | The major role of interlayer mixtures is to mitigate reflective cracking by absorbing or dissipating concentrated stress, and relatively low-stiffness materials are typically used. However, there is a concern that interlayer mixtures may increase the risk of rutting because of these low-stiffness materials. The dominant aggregate size range (DASR) porosity has been successfully applied for structural mixtures to ensure enhanced rutting performance. This study mainly focused on developing new DASR porosity requirements for interlayer mixtures that ensures acceptable rutting performance in the mix design phase. Ten interlayer mixtures with a broad range of DASR porosities were evaluated using the asphalt pavement analyzer test. Our results indicated that the gradation characteristics of interlayer mixtures played an important role in rutting performance. Also, a relationship between DASR porosity and the rutting potential of interlayer mixtures was identified that resulted in the establishment of the preliminary DASR porosity requirements. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|