Department of Civil Engineering, National Institute of Technology, Mizoram, India.
Department of Civil Engineering, National Institute of Technology, Srinagar, India.
Environ Sci Pollut Res Int. 2024 Aug;31(36):48908-48927. doi: 10.1007/s11356-024-34538-6. Epub 2024 Jul 31.
There is a global concern with continuous waste production, and efforts are underway to use these wastes in the construction sector. The negative effects of excessive waste production and the use of virgin materials and energy in Hot Mix Asphalt (HMA) construction are challenging and require attention. The right step towards developing resilient road infrastructure is using cold bitumen emulsion mixtures (CBEMs), a cold mix asphalt (CMA). A long-term fix to issues with waste generation and the creation of flexible pavements with HMA can be found by incorporating wastes into CMA. This work reviews the utilization of numerous wastes from different sectors (agricultural, industrial, construction and demolition, and municipal) that are well-known but underutilized and could be used as potential fillers in cold asphalt mixtures. Focus is given to the critical analysis of wastes' physiochemical characteristics and how these affected the effectiveness of mixtures against primary distresses like stability, stiffness, rutting, cracking, fatigue, and moisture susceptibility. Almost all waste materials incorporation reported enhancement in the mechanical performance of CBEM mixes concerning conventional CBEM mixes. The paper sums up the impact on various mechanical properties of CBEM mixes utilizing waste material filler, presents research gaps and a way forward to inspire researchers, and serves as a guideline for using waste materials as fillers in CBEM mixes. This will improve environmental quality and promote sustainability in the paving industry.
全球普遍关注持续的废物产生问题，人们正在努力将这些废物应用于建筑领域。过量废物产生和在热拌沥青（HMA）施工中使用原始材料和能源所带来的负面影响具有挑战性，需要引起关注。开发弹性道路基础设施的正确方法是使用冷拌沥青乳液混合物（CBEM），即冷拌沥青（CMA）。通过将废物掺入 CMA，可以找到解决 HMA 中废物产生和柔性路面问题的长期解决方案。这项工作综述了利用来自不同领域（农业、工业、建筑和拆除以及市政）的多种废物的情况，这些废物虽然众所周知，但利用率较低，可作为冷拌沥青混合物的潜在填料。重点对废物的物理化学特性进行了深入分析，并探讨了这些特性如何影响混合物的有效性，以抵抗稳定性、刚度、车辙、开裂、疲劳和耐湿性等主要病害。几乎所有报告的废物材料掺入都提高了 CBEM 混合物的力学性能，优于传统的 CBEM 混合物。本文总结了利用废料填料对 CBEM 混合物各种力学性能的影响，提出了研究空白和未来的发展方向，为研究人员提供了启示，并为将废料作为填料用于 CBEM 混合物提供了指导。这将提高环境质量，促进铺路行业的可持续发展。
