ABSTRACT

Due to the depletion of conventional asphalt binder resources and price hiking, researchers are focused on introducing environmental friendly and sustainable materials as a replacement to the conventional binder. On the other hand, the production of a large quantity of sugarcane bagasse (SCB) leads to severe environmental problems. Therefore, effective utilisation of SCB bio-oil as a replacement to conventional binder can help in reducing the aforementioned problems. In this study, the conventional binder and mixture were modified at 5% and 10% SCB bio-oil. The rheological behaviour of the modified binder was analysed using conventional tests and dynamic shear rheometer. The performance of asphalt mixtures was then evaluated using dynamic modulus, cooper wheel tracker and four point beam fatigue test. The ability of modified mixtures against moisture damage was also assessed. The results indicate that the 10% SCB bio-oil sample possessed better fatigue resistance among all samples with insignificant effect on rutting resistance. Further, the SCB bio-oil negatively influenced moisture resistance of modified mixtures. So it can be concluded that SCB bio-oil can potentially be used to modify conventional binder and mixture. However, there is a need to improve the moisture resistance of SCB bio-oil modified binder.

摘要

由于常规沥青粘合剂资源的枯竭和价格上涨，研究人员致力于引入环保，可持续的材料来替代常规粘合剂。另一方面，大量甘蔗渣（SCB）的生产导致严重的环境问题。因此，有效利用SCB生物油替代常规粘合剂可以帮助减少上述问题。在这项研究中，常规粘合剂和混合物在5％和10％SCB生物油中进行了改性。使用常规测试和动态剪切流变仪分析了改性粘合剂的流变行为。然后使用动态模量，铜轮跟踪器和四点梁疲劳试验评估沥青混合料的性能。还评估了改性混合物抵抗湿气损害的能力。结果表明，在所有样品中，含10％SCB的生物油样品具有更好的抗疲劳性，而对抗车辙性的影响不明显。此外，SCB生物油对改性混合物的耐湿性有负面影响。因此可以得出结论，SCB生物油可以潜在地用于改性常规粘合剂和混合物。然而，需要改善SCB生物油改性的粘合剂的耐湿性。因此可以得出结论，SCB生物油可以潜在地用于改性常规粘合剂和混合物。然而，需要改善SCB生物油改性的粘合剂的耐湿性。因此可以得出结论，SCB生物油可以潜在地用于改性常规粘合剂和混合物。然而，需要改善SCB生物油改性的粘合剂的耐湿性。