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| DOI | 10.3390/app14083179 |
| Phase Separation Study on the Storage of Technically Specification Natural Rubber Modified Bitumen | |
| 发表日期 | 2024 |
| EISSN | 2076-3417 |
| 起始页码 | 14 |
| 结束页码 | 8 |
| 卷号 | 14期号:8 |
| 英文摘要 | Overloading and climate change are often problems in pavement structures. For this reason, hard asphalt binders have high softening points, are elastic, and have good adhesion, which is needed to improve pavement performance. Asphalt binder performance can be enhanced by adding additives such as natural rubber or natural-rubber-modified asphalt. However, natural-rubber-modified asphalt shows poor storage stability problems. This is due to differences in density and viscosity between the constituent components of natural-rubber-modified asphalt. This study examines the phase separation mechanism in technically specified natural rubber (TSNR) modified asphalt. Prediction of the optimum storage length of modified asphalt before phase separation occurs, using a combined incompressible Navier-Stokes and phase field model and carried out with COMSOL Multiphysics software version 5.5. Experimental validation was conducted at TSNR levels of 8, 10, and 12% at 160 degrees C for 48 h, with and without sulfur. The simulation showed that the asphalt modified with TSNR experienced phase separation after 12 h of storage at 160 degrees C under conditions without stirring. This aligns with the experimental results, which showed phase separation at 160 degrees C after 48 h. Adding sulfur additives did not have much effect on improving storage stability. The combined incompressible Navier-Stokes and phase field model accurately describes the phase separation in TSNR-modified asphalt. The results of this research recommend that the industry store natural-rubber-modified asphalt in a constantly stirred condition to prevent phase separation of modified asphalt. In addition, the results of this research help the industry predict or increase the homogeneity of polymer-modified asphalt production and save time and costs. |
| 英文关键词 | COMSOL multiphysics; natural rubber modified asphalt; phase separation; softening point; storage stability |
| 语种 | 英语 |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| WOS类目 | Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS记录号 | WOS:001210104300001 |
| 来源期刊 | APPLIED SCIENCES-BASEL
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/300411 |
| 作者单位 | Universitas Riau; Universitas Riau; National Research & Innovation Agency of Indonesia (BRIN); University of Indonesia |
| 推荐引用方式 GB/T 7714 | . Phase Separation Study on the Storage of Technically Specification Natural Rubber Modified Bitumen[J],2024,14(8). |
| APA | (2024).Phase Separation Study on the Storage of Technically Specification Natural Rubber Modified Bitumen.APPLIED SCIENCES-BASEL,14(8). |
| MLA | "Phase Separation Study on the Storage of Technically Specification Natural Rubber Modified Bitumen".APPLIED SCIENCES-BASEL 14.8(2024). |
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