微波辐射改性沥青对其流变性能影响的研究——老化研究

IF 4.6 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Recycling Pub Date : 2023-08-26 DOI:10.3390/recycling8050065
K. Owaid, Raghed Y. Ghazal, M. A. Avdelzaher
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引用次数: 0

摘要

本研究的重点是生产具有改进的流变特性的沥青,与原始沥青不同,受老化条件的影响较小。用废橡胶轮胎(SRT)改性沥青,加入不同比例的无水氯化铝,提高了Qayara沥青的流变性能。在进行热破碎过程后,加入废轮胎橡胶的重量百分比为1.0%。无水氯化铝催化剂的用量分别为0.4%和0.8%。将混合物在270瓦的功率下分别微波4、8和12分钟。所进行的测量是塑性、渗透、软化点和渗透指数。在改性后一年对改性沥青进行了上述测量,以了解老化条件的影响。通过FE-SEM和EDX对其微观结构和热力学进行了表征。研究结果表明,改性沥青粘结剂具有良好的抗老化流变性能。
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Study of the Effect of Modification of Asphalt on the Rheological Properties Employing Microwave Radiation—An Aging Study
This study focuses on producing asphalt with improved rheological properties that differ from the original asphalt and are less affected by aging conditions. The rheological properties of Qayara asphalt were enhanced by modifying the asphalt using spent rubber tire (SRT) with different percentages of anhydrous aluminum chloride. Percentages ranging from 1.0% by weight of the spent tire rubber were added after proceeding with the thermal crushing process. The percentages of anhydrous aluminum chloride catalyst were 0.4 and 0.8%, respectively. This mixture was microwaved at 270 watt of power for 4, 8, and 12 min, respectively. The measurements performed are plasticity, penetration, softening point, and penetration index. The previously mentioned measurements were also made on the modified asphalt one year after the modification process to understand the effect of aging conditions. The microstructure and thermodynamics have been characterized by FE-SEM and EDX measurements. This study provides good rheological properties of the modified bitumen binder that is aging-resistant.
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来源期刊
Recycling
Recycling Environmental Science-Management, Monitoring, Policy and Law
CiteScore
6.80
自引率
7.00%
发文量
84
审稿时长
11 weeks
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