The Effectiveness of Waste Tire Pyrolysis Oils (WTPOs) as Rejuvenating Agents for Asphalt Materials

Environments Pub Date : 2024-08-17 DOI:10.3390/environments11080176

Ahmed S. El-Ashwah, Magdy Abdelrahman

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Abstract

The continuous increase in solid waste materials, such as waste tires, underscores the critical importance of recycling them to mitigate environmental impact and promote sustainable resource management. This research study evaluated the effectiveness of utilizing waste tire pyrolysis oils (WTPOs) as recycling agents for asphalt materials. The chemical composition and thermal behavior of WTPO were analyzed using Fourier transform infrared (FT-IR) spectroscopy and thermogravimetric analysis (TGA). Mechanically, the prepared WTPO binders were assessed by measuring dynamic viscosity and changes in high- and intermediate-temperature performance grades. Additionally, the cracking susceptibility of the binders was evaluated using the Glover–Rowe (G-R) parameter. The findings indicated that WTPOs might contain water and light aromatics in varying percentages, depending on the pyrolysis process. Incorporating WTPOs enhanced the workability of asphalt mixtures and ensured a high degree of blending between recycled/aged asphalt and raw binder. A 12% WTPO dosage was identified as the most effective for enhancing fatigue and low-temperature cracking resistance, facilitating improved interactions between the virgin binder and recycled asphalt materials. Finally, utilizing WTPOs as rejuvenating agents in pavement construction supports sustainable practices by recycling waste materials and significantly improving the performance and durability of asphalt mixtures.

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废轮胎热解油（WTPOs）作为沥青材料再生剂的功效

废轮胎等固体废弃物的不断增加凸显了对其进行回收利用以减轻环境影响和促进可持续资源管理的重要性。本研究评估了利用废轮胎热解油（WTPOs）作为沥青材料回收剂的有效性。研究使用傅立叶变换红外光谱（FT-IR）和热重分析（TGA）对废轮胎热解油的化学成分和热行为进行了分析。通过测量动态粘度以及高温和中温性能等级的变化，对制备的 WTPO 粘合剂进行了力学评估。此外，还使用 Glover-Rowe (G-R) 参数评估了粘合剂的开裂敏感性。研究结果表明，根据热解工艺的不同，WTPOs 可能含有不同比例的水和轻芳烃。掺入 WTPO 可提高沥青混合料的工作性，并确保再生/陈化沥青与原材料粘结剂之间的高度混合。12% 的 WTPO 用量被认为对提高抗疲劳性和抗低温开裂性最有效，有助于改善原始粘结剂和回收沥青材料之间的相互作用。最后，在路面施工中使用 WTPO 作为再生剂，既能回收利用废料，又能显著改善沥青混合料的性能和耐久性，从而支持可持续发展实践。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environments

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