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使用不同再生剂的再生苯乙烯-丁二烯-苯乙烯嵌段共聚物（SBS）改性沥青结合料的流变性能及再生机理分析

Analysis of Rheological Properties and Regeneration Mechanism of Recycled Styrene-Butadiene-Styrene Block Copolymer (SBS) Modified Asphalt Binder Using Different Rejuvenators.

作者信息

Ma Hongmei, Guo Fucheng, Han Jihong, Zhi Pengfei

机构信息

Gansu Provincial Transportation Research Institute Group Co., Ltd., Lanzhou 730030, China.

Gansu Province Road Material Engineering Laboratory, Lanzhou 730030, China.

出版信息

Materials (Basel). 2024 Aug 28;17(17):4258. doi: 10.3390/ma17174258.

DOI:10.3390/ma17174258
PMID:39274647
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11396109/
Abstract

The regeneration performance of an aged styrene-butadiene-styrene block copolymer (SBS) will be significantly influenced by different rejuvenators. The objective of this study was to comparatively investigate the regeneration effect of different SBS-modified asphalt regenerators on aged SBS-modified asphalt. Four types of different regenerant formulations were selected. The optimal rejuvenator content was determined firstly using conventional performance tests. The rheological properties of the aged SBS-modified asphalt binder were evaluated by multiple stress creep recovery (MSCR) experiments. Subsequently, the regeneration mechanism of the SBS-modified asphalt binder was investigated using thin-layer chromatography-flame ionization detection (TLC-FID) and Fourier transform infrared spectroscopy (FTIR). The results showed that the rejuvenator had a certain recovery effect on the penetration, softening point, and ductility of the SBS-modified asphalt binder after aging. The SBS-modified rejuvenating agent was the most favorable among the four types of rejuvenators, where a rejuvenator dosage of 12% showed the optimal rejuvenation effect. The addition of regenerators could appropriately improve the elastic deformation capacity of the aged asphalt binder. The epoxy soybean oil in the regenerant reacted with the aging SBS-modified asphalt binder, supplementing the lost oil in the aged SBS-modified asphalt binder, dispersing the excessive accumulation of asphaltene, and making the residual SBS swell again. The viscoelastic properties of the aging asphalt binder were improved by adjusting the content of components and functional groups to achieve the purpose of regeneration.

摘要

老化的苯乙烯-丁二烯-苯乙烯嵌段共聚物（SBS）的再生性能会受到不同再生剂的显著影响。本研究的目的是比较研究不同SBS改性沥青再生剂对老化SBS改性沥青的再生效果。选择了四种不同的再生剂配方。首先通过常规性能试验确定最佳再生剂含量。采用多重应力蠕变恢复（MSCR）试验评估老化SBS改性沥青结合料的流变性能。随后，利用薄层色谱-火焰离子化检测（TLC-FID）和傅里叶变换红外光谱（FTIR）研究SBS改性沥青结合料的再生机理。结果表明，再生剂对老化后的SBS改性沥青结合料的针入度、软化点和延度有一定的恢复作用。在四种再生剂中，SBS改性再生剂最为有利，其中再生剂用量为12%时显示出最佳的再生效果。添加再生剂可适当提高老化沥青结合料的弹性变形能力。再生剂中的环氧大豆油与老化的SBS改性沥青结合料发生反应，补充老化SBS改性沥青结合料中损失的油，分散沥青质的过度聚集，并使残留的SBS再次溶胀。通过调整组分和官能团的含量改善老化沥青结合料的粘弹性性能，以达到再生的目的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/0e2c76fe109f/materials-17-04258-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/191c90641cd8/materials-17-04258-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/d91767aba55d/materials-17-04258-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/f89f55d05130/materials-17-04258-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/f6ce798f9866/materials-17-04258-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/2a988d813279/materials-17-04258-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/6c88ca8344fa/materials-17-04258-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/0e2c76fe109f/materials-17-04258-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/191c90641cd8/materials-17-04258-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/d91767aba55d/materials-17-04258-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/f89f55d05130/materials-17-04258-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/f6ce798f9866/materials-17-04258-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/2a988d813279/materials-17-04258-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/6c88ca8344fa/materials-17-04258-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7a3f/11396109/0e2c76fe109f/materials-17-04258-g007.jpg

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本文引用的文献

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Materials (Basel). 2018 Aug 29;11(9):1554. doi: 10.3390/ma11091554.
基于多尺度方法的干燥改性SBS沥青混合料界面特性、机理及性能评价
Sci Rep. 2025 Apr 3;15(1):11393. doi: 10.1038/s41598-025-91868-2.