研究了碳纳米管对沥青粘结剂性能的影响

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, COMPOSITES

Progress in Rubber Plastics and Recycling Technology Pub Date : 2021-06-30 DOI:10.1177/14777606211019413

Peerzada Mosir Shah, M. S. Mir

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引用次数: 4

摘要

本研究旨在探讨多壁碳纳米管(MWCNT’s)对低粘度级沥青粘结剂性能的影响。选择粘度等级为10级的沥青粘结剂作为对照粘结剂，然后加入不同比例的MWCNT(0.5-2.5%)对其进行改性。通过渗透试验、软化点试验、延性试验和旋转粘度试验，评价了MWCNT对改性沥青粘结剂基本物理性能的影响。动态剪切流变仪(DSR)用于评估老化和未老化沥青的基础和改性沥青的流变特性。通过常规流变学试验和基础流变学试验，发现MWCNT的加入改善了改性沥青的高温性能。多重应力蠕变和恢复(MSCR)试验结果表明，在0.1 kPa和3.2 kPa的应力强度下，MWCNT的加入改善了改性粘结剂的蠕变和恢复，证实了改性粘结剂具有更强的抗车辙性。此外，还观察到MWCNTs的加入显著提高了沥青粘结剂的抗老化性能。然而，MWCNTs的低温性能并不理想。此外，在沥青粘结剂中添加MWCNTs在高温储存条件下是稳定的。总的来说，在基础沥青粘合剂中使用MWCNTs有显著的改善。

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Investigating the influence of carbon nanotube on the performance of asphalt binder

The purpose of this study aims at investigating the impact of multi-walled carbon nanotubes (MWCNT’s) on the properties of low viscosity grade asphalt binder. Asphalt binder with viscosity grade-10 is selected as the control binder and later it is modified with different percentages of MWCNT’s (0.5–2.5%). Penetration, softening point, ductility and rotational viscosity test were employed for evaluating the effect of MWCNT’s on basic physical properties of modified asphalt binder. Dynamic Shear Rheometer (DSR) is used for evaluating the rheological properties of the base and modified bitumen, for both aged and unaged bitumen. Based on the conventional and basic rheological tests, it was seen that the addition of MWCNT’s improved the high-temperature performance of modified bitumen. Multiple Stress Creep and Recovery (MSCR) test results revealed that the addition of MWCNT’s improved the creep and recovery of modified binders for both stress intensities (0.1 kPa and 3.2 kPa) which confirms that the modified binder is more rut resistant. Moreover, it was observed that there was a significant improvement in the aging resistance of the asphalt binder due to addition of MWCNTs. However low temperature performance of MWCNTs was not encouraging. Also, MWCNTs addition to asphalt binder was found to be stable under high-temperature storage condition. Overall, there is a significant amount of improvement using MWCNTs in the base asphalt binder.

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来源期刊

Progress in Rubber Plastics and Recycling Technology MATERIALS SCIENCE, COMPOSITES-POLYMER SCIENCE

CiteScore

4.40

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： The journal aims to bridge the gap between research and development and the practical and commercial applications of polymers in a wide range of uses. Current developments and likely future trends are reviewed across key areas of the polymer industry, together with existing and potential opportunities for the innovative use of plastic and rubber products.