The objective of this study was to investigate the rheological and chemical properties of crumb rubber modified asphalt binder. Reacted and activated rubber (RAR) with different rubber contents were used to modify the asphalt binder, including 15%, 25%, 30%, 35% and 40% by mass of RAR modified asphalt binder. In general, the test results were favourable in rutting resistance performance, fatigue cracking resistance and low-temperature cracking resistance. The addition of RAR led to an improvement of elastic properties and a decrease in viscous features of the binders. The RAR behaved as an anti-cracking additive to increase the service life of asphalt pavements. At a strain level of 5.0%, the binder fatigue life of 15% RAR, 25% RAR, 30% RAR, 35% RAR, 40% RAR and 12% Terminal Blend were 13, 24, 30, 43, 45 and 18 times higher than that of the control binder, respectively. The absorbance growth height increased with increasing amounts of RAR additives in the Fourier Transform Infrared Spectroscopy spectra. A linear correlation was found between the RAR content of the binder and the area under the band at 3642 cm⁻¹ and the ratio of the bands at 3642 and 1376 cm⁻¹.

这项研究的目的是研究碎胶改性沥青粘合剂的流变和化学性质。使用具有不同橡胶含量的反应和活化橡胶（RAR）来改性沥青粘合剂，包括按质量计15％，25％，30％，35％和40％的RAR改性沥青粘合剂。通常，测试结果在耐车辙性，耐疲劳龟裂性和低温龟裂性方面是有利的。RAR的添加导致粘合剂的弹性性质的改善和粘性特征的降低。RAR起到抗裂添加剂的作用，以延长沥青路面的使用寿命。在5.0％的应变水平下，粘合剂疲劳寿命为13、24、30、43、15％RAR，25％RAR，30％RAR，35％RAR，40％RAR和12％末端共混物 分别是对照粘合剂的45倍和18倍。随着傅立叶变换红外光谱中RAR添加剂含量的增加，吸光度的增长高度也随之增加。在粘合剂的RAR含量与3642 cm处的条带下区域之间发现线性相关^-1和在3642和1376 cm ^-1处的能带比。