沥青的氧化老化是一种不可避免且不可逆的现象。暴露于阳光等有害因素,氧气,和紫外线辐射加速沥青和沥青路面的老化。老化过程会导致沥青硬化和脆化,导致路面过早失效。因此,为建设可持续持久的路面使用抗老化添加剂。在可用的添加剂中,抗氧化剂的使用已成为缓解沥青老化的有前途的解决方案。本综述旨在总结现有文献,以全面了解这些添加剂作为衰老抑制剂的有效性。它概述了沥青氧化过程中涉及的化学途径以及各种定量技术来测量老化的影响。这篇综述还强调了抗氧化剂在沥青中的潜在用途,并阐述了不同类型抗氧化剂防止沥青老化的工作机理。Further,改性对沥青微观的影响,宏,并讨论了混合物的水平。此外,提出了沥青抗氧化剂的成本分析和未来前景。
Oxidative aging of
bitumen is an inevitable and irreversible phenomenon. Exposure to detrimental factors such as sunlight, oxygen, and UV radiations accelerates the aging of
bitumen and bituminous pavement. The aging process induces hardening and embrittlement in
bitumen, leading to premature pavement failure. Therefore, for constructing sustainable long-lasting pavements anti-aging additives are used. Among the available additives, the use of antioxidants has emerged as a promising solution to mitigate the aging of bitumen. The current review aims to summarise the existing literature for a comprehensive understanding of the effectiveness of these additives as aging inhibitors. It provides an overview of the chemical pathway involved during bitumen oxidation and various quantification techniques to measure the effect of aging. This review also highlights the potential use of antioxidants in bitumen and elaborates on the working mechanism of different types of antioxidants to prevent
bitumen aging. Further, the effect of modification in
bitumen at micro, macro, and mixture levels are discussed. Additionally, cost analysis and future prospects on the use of antioxidants for bitumen are presented.