This research aims to evaluate the behavioural interface-bonding response of modified asphalt binders towards different types of additives. In this study, 6% natural rubber latex (NRL) was added into a conventional asphalt binder (PEN 60/70) with the subsequent addition of 0.1% silane additive and 0.3% Gripper (wax based) additive, based on the weight of the asphalt binder. The chemical functional groups and the effects of oxidation on the specimens were determined from attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy. The contact angle and surface free energy of the asphalt binders were measured using a goniometer device and analysed using the DROP image Advanced Software. Results from this study showed that the rubberised asphalt binders, with or without additive incorporation, possessed improved resistance to oxidation due to increases in CH and OH functional group concentrations, as well as improved wettability rate. In addition, the NRL modified asphalt binder with additive incorporation exhibited outstanding performance compared with PEN 60/70 and NRL modified asphalt binder without additive. Both additive incorporations showcased comparable performances, but with the Gripper additive incorporation having a better performance at different ageing conditions. Overall, the additive addition as surfactant showcased the potentiality to improve the interfacial bonding behaviour of NRL modified asphalt binders with aggregate, hence improving resistance to permanent deformation and fatigue cracking.

这项研究旨在评估改性沥青粘合剂对不同类型添加剂的行为界面键合反应。在这项研究中，将6％的天然橡胶胶乳（NRL）添加到常规的沥青粘合剂（PEN 60/70）中，然后添加0.1％的硅烷添加剂和0.3％的Gripper（基于蜡的）添加剂（基于橡胶的重量）沥青粘合剂。通过衰减全反射傅里叶变换红外（ATR-FTIR）光谱确定化学官能团和氧化对样品的影响。使用测角仪设备测量沥青粘合剂的接触角和表面自由能，并使用DROP image Advanced软件进行分析。这项研究的结果表明，无论是否掺入添加剂，橡胶沥青粘合剂都可以，由于CH和OH官能团浓度的增加，具有更好的抗氧化性，并提高了润湿率。此外，与PEN 60/70和不含添加剂的NRL改性沥青粘合剂相比，掺有添加剂的NRL改性沥青粘合剂表现出出色的性能。两种添加剂组合物均表现出可比的性能，但在不同的老化条件下，Gripper添加剂组合物具有更好的性能。总体而言，作为表面活性剂的添加剂显示出了改善NRL改性沥青粘合剂与骨料的界面粘结性能的潜力，从而提高了对永久变形和疲劳龟裂的抵抗力。与PEN 60/70和不含添加剂的NRL改性沥青粘结剂相比，掺有添加剂的NRL改性沥青粘结剂表现出卓越的性能。两种添加剂组合物均表现出可比的性能，但在不同的老化条件下，Gripper添加剂组合物具有更好的性能。总体而言，作为表面活性剂的添加剂显示出了改善NRL改性沥青粘合剂与骨料的界面粘结性能的潜力，从而提高了对永久变形和疲劳龟裂的抵抗力。与PEN 60/70和不含添加剂的NRL改性沥青粘结剂相比，掺有添加剂的NRL改性沥青粘结剂表现出卓越的性能。两种添加剂组合物均表现出可比的性能，但在不同的老化条件下，Gripper添加剂组合物具有更好的性能。总体而言，作为表面活性剂的添加剂显示出了改善NRL改性沥青粘合剂与骨料的界面粘结性能的潜力，从而提高了对永久变形和疲劳龟裂的抵抗力。但结合了Gripper添加剂后，在不同的时效条件下表现出更好的性能。总体而言，作为表面活性剂的添加剂显示出了改善NRL改性沥青粘合剂与骨料的界面粘结性能的潜力，从而提高了对永久变形和疲劳龟裂的抵抗力。但结合了Gripper添加剂后，在不同的时效条件下性能会更好。总体而言，作为表面活性剂的添加剂显示出了改善NRL改性沥青粘合剂与骨料的界面粘结性能的潜力，从而提高了对永久变形和疲劳龟裂的抵抗力。