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SBS胶乳改性沥青的流变性能、相容性及储存稳定性

Rheological Properties, Compatibility, and Storage Stability of SBS Latex-Modified Asphalt.

作者信息

Ren Shisong, Liu Xueyan, Fan Weiyu, Wang Haopeng, Erkens Sandra

机构信息

Section of Pavement Engineering, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands.

State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, Shandong, China.

出版信息

Materials (Basel). 2019 Nov 8;12(22):3683. doi: 10.3390/ma12223683.

DOI:10.3390/ma12223683
PMID:31717293
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6888180/
Abstract

A styrene-butadiene-styrene (SBS) latex modifier can be used for asphalt modification due to the fact of its energy-saving, construction convenience, and economic advantages. The objective of this study was to investigate the influence of asphalt type and SBS latex dosage on the rheological properties, compatibility, and storage stability of asphalt through temperature and frequency sweep, steady-state flow, multiple stress creep and recovery (MSCR) tests, Cole-Cole plots and thermal storage tests. The results indicated that high SBS latex content is beneficial for improving anti-rutting, anti-fatigue, viscous flow resistance, and elastic recovery abilities of modified asphalt. The chemical composition of asphalt had a significant effect on the properties of the SBS latex-modified asphalt. High asphaltenes and low resins were favorable to enhancing anti-rutting and recovery properties but weakened the anti-fatigue, compatibility, and storage stability of modified asphalt. Furthermore, compared to SBS particle-modified asphalt, SBS latex-modified asphalt had greater rutting and fatigue resistance. However, SBS latex-modified asphalt had some disadvantages in compatibility and storage stability. Comprehensively considering the balance of viscoelastic properties, compatibility, and storage stability of SBS latex-modified asphalt, the mixing dosage of SBS latex modifier is recommended at 4.0 wt% which could feasibly replace SBS particle in asphalt modification.

摘要

由于具有节能、施工方便和经济优势，苯乙烯-丁二烯-苯乙烯（SBS）胶乳改性剂可用于沥青改性。本研究的目的是通过温度和频率扫描、稳态流动、多重应力蠕变恢复（MSCR）试验、科尔-科尔图和热储存试验，研究沥青类型和SBS胶乳用量对沥青流变性能、相容性和储存稳定性的影响。结果表明，高SBS胶乳含量有利于提高改性沥青的抗车辙、抗疲劳、粘性流动阻力和弹性恢复能力。沥青的化学组成对SBS胶乳改性沥青的性能有显著影响。高沥青质和低树脂有利于提高抗车辙和恢复性能，但会削弱改性沥青的抗疲劳、相容性和储存稳定性。此外，与SBS颗粒改性沥青相比，SBS胶乳改性沥青具有更强的抗车辙和抗疲劳性能。然而，SBS胶乳改性沥青在相容性和储存稳定性方面存在一些缺点。综合考虑SBS胶乳改性沥青的粘弹性、相容性和储存稳定性的平衡，建议SBS胶乳改性剂的混合用量为4.0 wt%，这可以在沥青改性中切实替代SBS颗粒。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/ad9f5a74c14e/materials-12-03683-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/5142f7c0c3d7/materials-12-03683-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/ad9f5a74c14e/materials-12-03683-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/218a2f9d7b74/materials-12-03683-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/2ed257918e37/materials-12-03683-g002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/55b6a6aa3283/materials-12-03683-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/e465569095e0/materials-12-03683-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/d463fe607e9c/materials-12-03683-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/f89a384f966f/materials-12-03683-g008a.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e6f1/6888180/ad9f5a74c14e/materials-12-03683-g010.jpg

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