ABSTRACT

Roads, due to use and time, become aged and as a result, they require maintenance. This paper presents a promising technology to compensate ageing. The method uses porous aggregates as capsules containing rejuvenator. The rejuvenator will be released during the asphalt pavement's service life, reversing the impact of ageing on asphalt performance, properties and, thus, extending pavement's durability. This paper describes the properties of two porous aggregates, the encapsulation method and the properties of the capsules. The capsules were incorporated into an asphalt mix and their fundamental properties analysed. Finally, the recovery potential of the aged binder was evaluated using ageing tests. The results demonstrate the effectiveness of the technology, a change in binder properties was observed over time, but to a lesser extent for the bitumen when capsules were included than for the reference. The solution also highlights the benefits of using encapsulated rejuvenator over the use of rejuvenator directly added to the mix.

摘要

由于使用和时间，道路会老化，因此需要维护。本文介绍了一种很有前途的技术来补偿老化。该方法使用多孔骨料作为含有再生剂的胶囊。再生剂将在沥青路面的使用寿命期间释放，逆转老化对沥青性能、特性的影响，从而延长路面的耐久性。本文介绍了两种多孔聚集体的特性、封装方法和胶囊的特性。将胶囊掺入沥青混合料中并分析其基本特性。最后，使用老化试验评估老化粘合剂的恢复潜力。结果证明了该技术的有效性，观察到粘合剂性能随时间的变化，但当包含胶囊时，沥青的影响程度低于参考。该解决方案还强调了使用封装再生剂相对于使用直接添加到混合物中的再生剂的优势。