Thermal Stability and Moisture Resistance of Bitumen Composites Modified with Triglyceride Plant Oils

IF 6.5 3区材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Advanced Sustainable Systems Pub Date : 2024-09-12 DOI:10.1002/adsu.202400328

Albert M. Hung, Sanad Aldagari, Luis Torres Figueroa, Huachun Zhai, Elham H. Fini

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引用次数: 0

Abstract

This paper examines the chemical characteristics of four plant‐derived bio‐oils, including waste cooking oils, to address a research gap concerning their effects on the thermal stability and moisture susceptibility of asphalt. While bio‐oils are known to soften asphalt, their specific impact on these properties is less understood. The study evaluates four different bio‐oils (B1–B4) derived from various waste vegetable sources to determine their influence on asphalt performance. The findings indicate that bio‐oils with higher purity and lower polyunsaturated fatty acid content offer better resistance to heat and UV‐induced degradation. Bio‐oils with lower iodine values also show improved resistance to moisture damage. Notably, bitumen composites containing bio‐oil B2 do not negatively affect asphalt's moisture resistance, while others increase its moisture susceptibility. Tests with liquid anti‐strip agents reveal that silanes and amine‐based agents are the most effective at reducing moisture damage. These results underscore the importance of selecting bio‐oils with low acid and iodine values, low polyunsaturated fatty acid content, and high purity for use in asphalt. This study supports sustainability and resource conservation by recommending bio‐oils that preserve the durability of bio‐modified asphalts.

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用甘油三酯植物油改性的沥青复合材料的热稳定性和防潮性

本文研究了四种植物提取的生物油（包括废弃烹饪油）的化学特性，以填补有关生物油对沥青热稳定性和湿敏性影响的研究空白。众所周知，生物油可以软化沥青，但它们对这些特性的具体影响却不甚了解。本研究评估了四种不同的生物油（B1-B4），这些生物油来自不同的废弃植物资源，以确定它们对沥青性能的影响。研究结果表明，纯度较高、多不饱和脂肪酸含量较低的生物油具有更好的耐热性和耐紫外线降解性。碘值较低的生物油还具有更强的抗湿气破坏能力。值得注意的是，含有生物油 B2 的沥青复合材料不会对沥青的防潮性产生负面影响，而其他生物油则会增加沥青的防潮性。对液体抗剥落剂的测试表明，硅烷和胺类抗剥落剂在减少湿害方面最为有效。这些结果强调了选择酸值和碘值低、多不饱和脂肪酸含量低、纯度高的生物油用于沥青的重要性。这项研究通过推荐可保持生物改性沥青耐久性的生物油，支持可持续发展和资源保护。

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

Advanced Sustainable Systems Environmental Science-General Environmental Science

CiteScore

10.80

自引率

4.20%

发文量

186

期刊介绍： Advanced Sustainable Systems, a part of the esteemed Advanced portfolio, serves as an interdisciplinary sustainability science journal. It focuses on impactful research in the advancement of sustainable, efficient, and less wasteful systems and technologies. Aligned with the UN's Sustainable Development Goals, the journal bridges knowledge gaps between fundamental research, implementation, and policy-making. Covering diverse topics such as climate change, food sustainability, environmental science, renewable energy, water, urban development, and socio-economic challenges, it contributes to the understanding and promotion of sustainable systems.