Loise Valeria, Abe Abraham A, Porto Michele, Muzzalupo Innocenzo, Madeo Luigi, Colella Maria Francesca, Rossi Cesare Oliviero, Caputo Paolino
Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Arcavacata di Rende, CS, Italy.
Research Centre for Forestry and Wood, Council for Agricultural Research and Agricultural Economy Analysis, 87036 Rende, CS, Italy.
Materials (Basel). 2024 May 13;17(10):2303. doi: 10.3390/ma17102303.
In recent times, circular economy initiatives in addition to the need for sustainable biomaterials have brought about several attempts at the eco-friendly, eco-sustainable and cost-effective production of asphalt pavements. It is an increasingly common practice in the asphalt industry to improve road pavement performance using additives to enhance the physico-chemical properties of bitumen, which performs the role of the binder in the asphalt mix. This paper evaluated the potential of a bio-based additive derived from olive leaf residue as a modifier and antioxidant agent for bitumen. Samples of neat, aged and doped aged bitumen were analyzed. In this study, the two bio-based additives were characterized in terms of phenol, chlorophyll, lignin and cellulose content, which was correlated with the mechanical properties of the tested samples. The mechanical properties of the neat, modified, aged and unaged samples were evaluated via Dynamic Shear Rheology. The bio-based additives proved to be promising and can improve the properties of bitumen binder and the performance of asphalt pavements in general.
近年来，除了对可持续生物材料的需求外，循环经济倡议还促使人们多次尝试以环保、生态可持续且具有成本效益的方式生产沥青路面。在沥青行业，使用添加剂来改善道路路面性能以增强沥青的物理化学性质已成为越来越普遍的做法，沥青在沥青混合料中起粘结剂的作用。本文评估了一种源自橄榄叶残渣的生物基添加剂作为沥青改性剂和抗氧化剂的潜力。对纯净、老化和掺杂老化的沥青样品进行了分析。在本研究中，对两种生物基添加剂的酚、叶绿素、木质素和纤维素含量进行了表征，并将其与测试样品的力学性能相关联。通过动态剪切流变学评估了纯净、改性、老化和未老化样品的力学性能。事实证明，这种生物基添加剂很有前景，总体上可以改善沥青粘结剂的性能和沥青路面的性能。
