Terminal blend (TB) rubberized asphalt binder can be produced through the dissolution of crumb rubber modifier (CRM) in asphalt, meanwhile other modifiers, like styrene–butadienestyrene (SBS) polymer and crosslinking agent sulphur are supplemented to enhance the properties of modified asphalt. The effect of sulphur on asphalt oxidation and polymer degradation is not well documented for TB rubberized asphalt binder. This paper investigates anti-aging potential of sulphur in TB rubberized asphalt binder from chemical and mechanical perspective. Carbonyl index and butadiene/styrene ratio, which are derived from fourier transform infrared (FTIR) spectrums, are applied to analyse carbonyl growth and butadiene reduction. Gel permeation chromatography (GPC) based polymer retention index is used to detect the change of polymer molecular weight. The complex modulus |G*| is used to calculate hardening index and phase angle master curve is used to analyse the elastic contribution of sulphur. Crosslinking agent sulphur does not have definite positive or negative effect on the carbonyl growth of TB rubberized asphalt binders in this laboratory aging study. However, sulphur does help to alleviate the age hardening behavior. For miscible TB rubberized asphalt binders, 0.3% or 0.4% sulphur can improve the resistance to polymer degradation. In addition, sulphur can improve elastic response of TB rubberized asphalt binder even for pressurized aging vessel (PAV) aged asphalt.

可以通过将碎屑橡胶改性剂（CRM）溶解在沥青中来生产末端共混物（TB）橡胶沥青粘结剂，同时还添加了其他改性剂，例如苯乙烯-丁二烯苯乙烯（SBS）聚合物和交联剂硫，以增强改性沥青的性能。对于TB橡胶沥青粘合剂，硫对沥青氧化和聚合物降解的影响尚未得到充分证明。本文从化学和机械的角度研究了TB橡胶沥青粘合剂中硫的抗老化潜力。衍生自傅立叶变换红外（FTIR）光谱的羰基指数和丁二烯/苯乙烯比率用于分析羰基的生长和丁二烯的还原。基于凝胶渗透色谱法（GPC）的聚合物保留指数用于检测聚合物分子量的变化。复数模量| G * | 用于计算硬化指数，使用相角主曲线分析硫的弹性贡献。在该实验室老化研究中，交联剂硫对TB橡胶沥青粘合剂的羰基生长没有明确的正或负影响。但是，硫磺确实有助于减轻时效行为。对于可混溶的TB橡胶沥青混合料，0.3％或0.4％的硫可提高聚合物降解的抵抗力。此外，硫磺即使在加压老化容器（PAV）老化的沥青中也可以改善TB橡胶沥青粘合剂的弹性响应。在该实验室老化研究中，交联剂硫对TB橡胶沥青粘合剂的羰基生长没有明确的正或负影响。但是，硫磺确实有助于减轻时效行为。对于可混溶的TB橡胶沥青混合料，硫含量为0.3％或0.4％可以提高聚合物抗降解性。此外，硫磺即使在加压老化容器（PAV）老化的沥青中也可以改善TB橡胶沥青粘合剂的弹性响应。在该实验室老化研究中，交联剂硫对TB橡胶沥青粘合剂的羰基生长没有明确的正或负影响。但是，硫磺确实有助于减轻时效行为。对于可混溶的TB橡胶沥青混合料，0.3％或0.4％的硫可提高聚合物降解的抵抗力。此外，硫磺即使在加压老化容器（PAV）老化的沥青中也可以改善TB橡胶沥青粘合剂的弹性响应。