Crumb rubber modified bitumen (CRMB) can be regarded as a binary composite system in which swollen rubber particles are embedded in the bitumen matrix. The current study aims to further improve the prediction accuracy of micromechanical models for CRMB by considering the interparticle interactions. To accomplish this goal, two different strategies were used. Firstly, the (n+1)-phase model was applied to the CRMB system by considering the multilayer properties of swollen rubber particles. Secondly, a new micromechanical scheme called the J-C model was used to account for the interparticle interaction issue. Results show that the (n+1)-phase models slightly increase the prediction accuracy but the underestimation of complex modulus at lower frequencies remains unsolved. The J-C model remedies the underestimation of modulus in the low-frequency range by other models and provides an overall improvement for the relative prediction accuracy by properly addressing the interparticle interactions from the perspective of particle configuration.

粒状橡胶改性沥青（CRMB）可以看作是二元复合体系，其中溶胀的橡胶颗粒嵌入在沥青基质中。当前的研究旨在通过考虑粒子间的相互作用来进一步提高CRMB的微力学模型的预测准确性。为了实现这个目标，使用了两种不同的策略。首先，通过考虑溶胀的橡胶颗粒的多层性质，将（n + 1）相模型应用于CRMB系统。其次，使用一种称为JC模型的新的微机械方案来解决粒子间的相互作用问题。结果表明，（n + 1）相模型可以稍微提高预测精度，但在较低频率下低估复数模量仍未解决。