Nciri Nader, Kim Namho
School of Industrial Design & Architectural Engineering, Korea University of Technology & Education, 1600 Chungjeol-ro, Byeongcheon-myeon, Dongnam-gu, Cheonan 31253, Chungnam, Republic of Korea.
School of Energy, Materials & Chemical Engineering, Korea University of Technology & Education, 1600 Chungjeol-ro, Byeongcheon-myeon, Dongnam-gu, Cheonan 31253, Chungnam, Republic of Korea.
Materials (Basel). 2023 Oct 28;16(21):6934. doi: 10.3390/ma16216934.
Navigating the crossroads of sustainable infrastructure and innovative waste management, this research unveils the potential of waste honeycombs (WHCs)-an overlooked byproduct of apiculture-as a potent modifier for asphalt binder formulations. This endeavor addresses the dual challenge of enhancing road pavement sustainability and mitigating environmental degradation. A meticulous methodology evaluated the impact of varying WHC concentrations (5, 10, and 15 wt.%) on the asphalt binder, examining its attributes pre- and post-aging. Employing an array of analytical tools-thin-layer chromatography-flame ionization detection (TLC-FID); Fourier transform-infrared spectroscopy (FT-IR); scanning electron microscopy (SEM); thermogravimetric analysis (TGA); and a suite of conventional tests such as penetration, softening point, viscosity, ductility, dynamic shear rheometer (DSR), and multiple stress-creep recovery (MSCR)-provided a comprehensive insight into the binder's behavior. TLC-FID analyses revealed that WHC, with its 92 wt.% resin content, altered the SARA profile across distinct aging conditions, notably reducing asphaltene content, a factor linked to binder stiffness. The colloidal instability index (I) further attested to this, pointing to a more thermodynamically stable system with WHC's inclusion. Meanwhile, FT-IR confirmed a physical interaction between WHC and asphalt without introducing new chemical entities. SEM observations highlighted the superior miscibility of WHC with asphalt, evidenced by a unique microtexture. With marked precision, TGA assessments unveiled a bolstering of asphalt's inherent thermal resilience consequent to a minor WHC integration. From the conventional tests, shifts in penetration, softening point, and viscosity were observed, with reduced viscosity, indicating improved workability. Lastly, while rutting potential was sensitive to WHC concentrations, fatigue resistance notably heightened with minor to moderate WHC inclusions. In essence, this pioneering study advocates for WHC's integration into asphalt formulations, offering enhanced road performance coupled with sustainable waste utilization. The findings underscore the synergy between environmental stewardship and infrastructural advancement.
本研究探索了可持续基础设施与创新废物管理的交叉点,揭示了废弃蜂窝(WHCs)——一种被忽视的养蜂副产品——作为沥青结合料配方有效改性剂的潜力。这一努力应对了增强道路路面可持续性和减轻环境退化的双重挑战。一种细致的方法评估了不同WHC浓度(5%、10%和15%重量)对沥青结合料的影响,研究了其老化前后的特性。采用一系列分析工具——薄层色谱-火焰离子化检测(TLC-FID);傅里叶变换红外光谱(FT-IR);扫描电子显微镜(SEM);热重分析(TGA);以及一系列常规试验,如针入度、软化点、粘度、延度、动态剪切流变仪(DSR)和多重应力蠕变恢复(MSCR)——全面深入地了解了结合料的行为。TLC-FID分析表明,WHC树脂含量为92%重量,在不同老化条件下改变了SARA分布,显著降低了沥青质含量,沥青质含量是与结合料刚度相关的一个因素。胶体不稳定指数(I)进一步证明了这一点,表明加入WHC后系统在热力学上更稳定。同时,FT-IR证实了WHC与沥青之间的物理相互作用,且未引入新的化学实体。SEM观察突出了WHC与沥青的优异混溶性,独特的微观结构证明了这一点。TGA评估精确地揭示,少量加入WHC后沥青的固有热弹性得到增强。从常规试验来看,观察到针入度、软化点和粘度发生了变化,粘度降低,表明工作性能得到改善。最后,虽然车辙潜力对WHC浓度敏感,但少量至中等量加入WHC时,抗疲劳性显著提高。本质上,这项开创性研究主张将WHC纳入沥青配方,既能提高道路性能,又能实现可持续的废物利用。研究结果强调了环境管理与基础设施发展之间的协同作用。