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温拌再生SBS改性沥青混合料水稳定性及安全机理研究

Study on the water stability and safety mechanism of warm mixed recycled SBS modified asphalt mixture.

作者信息

Sun Jie, Cheng Yu, Zou Guilian, Wang Wentong

机构信息

College of Transportation, Shandong University of Science and Technology, Qingdao, 266510, Shandong, China.

School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510630, Guangdong, China.

出版信息

Sci Rep. 2025 Aug 25;15(1):31188. doi: 10.1038/s41598-025-11402-2.

DOI:10.1038/s41598-025-11402-2
PMID:40855149
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12379210/
Abstract

The warm-mix recycled asphalt mixture (RAM), which integrates the warm-mix technique with recycling technology, offers significant energy savings and promotes the effective use of waste materials, delivering both environmental and economic benefits. Therefore, this study selected Evotherm surface-active additive to investigate its impact on the properties of recycled asphalt binder and its corresponding mixture, compared and analyzed the differences between road properties of hot-mix RAM and warm-mix RAM, focusing on the water stability of warm-mix RAM and the safety mechanism of warm-mix additive. The results revealed that while Evotherm did not significantly alter the penetration, softening point, or ductility of recycled SBSMA, it enhanced the surface energy and aggregate adhesion. Compared to hot-mix RAM, warm-mix RAM demonstrated superior fatigue resistance, better low-temperature cracking resistance, and improved water stability. The warm-mix RAM water stability was significantly affected by factors such as mixing temperature, the incorporation method of warm-mix additive, and its dosage. The above research provided valuable insights for the efficient and safe application of warm-mix recycled asphalt technology.

摘要

温拌再生沥青混合料（RAM）将温拌技术与再生技术相结合，可显著节约能源并促进废料的有效利用，带来环境和经济效益。因此，本研究选用Evotherm表面活性添加剂，研究其对再生沥青结合料及其相应混合料性能的影响，比较并分析热拌RAM和温拌RAM路用性能的差异，重点关注温拌RAM的水稳定性和温拌添加剂的安全机理。结果表明，虽然Evotherm并未显著改变再生SBSMA的针入度、软化点或延度，但提高了表面能和集料粘附性。与热拌RAM相比，温拌RAM表现出更好的抗疲劳性能、更低的低温抗裂性和更高的水稳定性。温拌RAM的水稳定性受拌和温度、温拌添加剂的掺入方法及其用量等因素的显著影响。上述研究为温拌再生沥青技术的高效安全应用提供了有价值的见解。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee17/12379210/4583c5b41c16/41598_2025_11402_Fig11_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee17/12379210/dd28fcd5bd0f/41598_2025_11402_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee17/12379210/51df1f6a11cb/41598_2025_11402_Fig9_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ee17/12379210/4583c5b41c16/41598_2025_11402_Fig11_HTML.jpg

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本文引用的文献

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Materials (Basel). 2024 Aug 28;17(17):4258. doi: 10.3390/ma17174258.
2
Optimization Design and Mechanical Performances of Plant-Mix Hot Recycled Asphalt Using Response Surface Methodology.基于响应面法的厂拌热再生沥青混合料优化设计与力学性能
Materials (Basel). 2023 Aug 27;16(17):5863. doi: 10.3390/ma16175863.
3
Understanding the Wetting and Water-Induced Dewetting Behaviors of Bitumen on Rough Aggregate Surfaces.
理解沥青在粗糙集料表面的润湿和水诱导脱湿行为。
Langmuir. 2021 Mar 23;37(11):3420-3427. doi: 10.1021/acs.langmuir.0c03667. Epub 2021 Mar 9.
4
The Role of Additives in Warm Mix Asphalt Technology: An Insight into Their Mechanisms of Improving an Emerging Technology.添加剂在温拌沥青技术中的作用：对其改进一项新兴技术的作用机制的洞察
Nanomaterials (Basel). 2020 Jun 19;10(6):1202. doi: 10.3390/nano10061202.