建材世界2024,Vol.45Issue(3) :67-71.DOI:10.3963/j.issn.1674-6066.2024.03.017

SBS-WCO复合再生沥青高温流变性能与微观结构研究

Investigation on High Temperature Rheological Properties and Microstructures of SBS-WCO Recycled Asphalt

贺文杰 叶群山 张思敏 谢成 刘豪斌
建材世界2024,Vol.45Issue(3) :67-71.DOI:10.3963/j.issn.1674-6066.2024.03.017

SBS-WCO复合再生沥青高温流变性能与微观结构研究

Investigation on High Temperature Rheological Properties and Microstructures of SBS-WCO Recycled Asphalt

贺文杰 1叶群山 2张思敏 2谢成 3刘豪斌3
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作者信息

  • 1. 长沙理工大学卓越工程师学院,长沙 410114
  • 2. 长沙理工大学交通运输工程学院,长沙 410114
  • 3. 广西北投交通养护科技集团有限公司,南宁 530201
  • 折叠

摘要

采用黏度试验、多应力重复蠕变恢复试验、傅里叶红外光谱试验和凝胶色谱实验研究了 SBS(苯乙烯-丁二烯-苯乙烯嵌段共聚物)-WCO(废食用油)复合再生沥青的高温流变性能与微观结构.结果表明:SBS-WCO复合再生沥青的黏度相比老化沥青显著降低;SBS-WCO复合再生剂能有效改善老化沥青的高温流变性能;沥青复合再生过程以物理作用为主,复合再生剂能缓解沥青老化过程中轻质小分子流失,增强再生沥青的抗老化性能.

Abstract

Brookfield viscosity test,Multiple Stress Creep Recovery Test(MSCR)and Fourier Transform Infrared(FTIR)were conducted to investate the high temperature theological properties and microstructures of SBS(Styrenic Block Copolymers)-WCO(Waste Cooking Oil)recycled asphalt.Test results indicated that the viscosity of recycled as-phalt was decreased significantly,and the high temperature rheological properties was improved.The composite rejuve-nator and aged asphalt was mixed by physical effect.The lossing of lightweight small molecules was relieved by the re-juvenator,which resulted in the enhancement of aging resistance for recycled asphalt.

关键词

SBS-WCO复合再生剂/流变性能/微观结构/老化沥青

Key words

SBS-WCO composite rejuvenator/rheological properties/microstructures/aged aphalt

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基金项目

国家自然科学基金(52378437)

交通部重点科技项目(2020-MS1-005)

湖南省大学生创新创业训练计划(S202310536068)

出版年

2024
建材世界
武汉理工大学

建材世界

影响因子:0.869
ISSN:1674-6066
参考文献量7
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