As a viscoelastic material, asphalt mixture mainly derives its viscoelastic properties from the asphalt binder. This research aims to comparatively evaluate the strain response regularity of asphalt binder and asphalt mastic through repeated creep and recovery (RCR) test indices. The influences of the asphalt binders, filler volume fraction and filler type on the strain response indices: deformation recovery rate (R) and non-recoverable creep compliance (Jnr) were analyzed according to the RCR test results of the mastics. The viscoplastic (VP) model for characterizing asphalt binder and asphalt mastic behavior was described. The parameters of the model were determined in the prepeak region of the loading, under different stress levels. Simultaneously, the prediction accuracy of the developed VP model was verified, and the applicability of the model was analyzed. The filler volume fraction has the most significant effect on the strain response of the mastic. The R value decreases but the Jnr value increases with the filler volume fractions. The average non-recoverable percent Jnr value decreases with the aging degree increasing. Compared with the unaged (OR) mastics, the Jnr values after rolling thin film oven test (RTFOT) and pressure aging vessel (PAV) decreases by more than 20% and 88%. The improved strain hardening VP model can better simulate the viscoplastic strain response of the asphalt binder and mastic in the RCR test, and the prediction accuracy was greatly improved. The prediction accuracy slightly decreased with creep time increasing. Further research shows that the improved strain hardening VP model is also applicable to the calculation of viscoplastic strains in the RCR test of the asphalt binder and the mastic after RTFOT aging and PAV aging. The improved VP model increases from 5% to 92% off the reference line to within 3%.

作为粘弹性材料，沥青混合物主要从沥青粘合剂获得其粘弹性质。这项研究旨在通过反复蠕变和恢复（RCR）测试指标来比较评估沥青粘合剂和沥青胶泥的应变响应规律。沥青粘合剂，填料体积分数和填料类型对应变响应指数的影响：变形回复率（R）和不可恢复的蠕变柔量（Jnr）根据胶泥的RCR测试结果进行了分析。描述了用于表征沥青粘合剂和沥青胶泥行为的粘塑性（VP）模型。在不同应力水平下，在载荷的前峰区域确定模型的参数。同时，验证了所开发VP模型的预测精度，并分析了该模型的适用性。填料体积分数对乳香的应变响应具有最显着的影响。R值降低，但Jnr值随填料体积分数的增加而增加。平均不可回收百分比Jnr值随老化程度的增加而降低。与未老化的（OR）乳胶相比，薄膜烘箱测试（RTFOT）和压力老化容器（PAV）的Jnr值降低了20％和88％以上。改进的应变硬化VP模型可以更好地模拟RCR试验中沥青胶结料和胶泥的粘塑性应变响应，大大提高了预测精度。随着蠕变时间的增加，预测精度略有下降。进一步的研究表明，改进的应变硬化VP模型也适用于RTFOT老化和PAV老化后的沥青粘合剂和胶泥的RCR试验中的粘塑性应变的计算。改进的VP模型从参考线的5％增加到了92％，达到了3％以内。进一步的研究表明，改进的应变硬化VP模型也适用于RTFOT老化和PAV老化后的沥青粘合剂和胶泥的RCR试验中的粘塑性应变的计算。改进的VP模型从参考线的5％增加到92％，达到3％以内。进一步的研究表明，改进的应变硬化VP模型也适用于RTFOT老化和PAV老化后的沥青粘合剂和胶泥的RCR试验中的粘塑性应变的计算。改进的VP模型从参考线的5％增加到92％，达到3％以内。