Innovative pothole patching materials reinforced with a high-toughness, low-viscosity nanomolecular resin, dicyclopentadiene (DCPD, C₁₀H₁₂), have been experimentally proven to be effective in repairing cracked asphalt pavements and can significantly enhance their durability and service life. In this paper, a three-dimensional micromechanical framework is proposed based on the micromechanics and continuum damage mechanics to predict the effective elastic-damage behaviors of this innovative pothole patching material under the splitting tension test (ASTM D6931). In this micromechanical model, irregular coarse aggregates are approximated and simulated by randomly allocated multi-layer-coated spherical particles in certain representative sizes. Fine aggregates, asphalt binder (PG64-10), cured DCPD (p-DCPD), and air voids are formulated into an isotropic elastic asphalt mastic matrix based on the multilevel homogenization approach. The theoretical micromechanical elastic-damage predictions are then systemically compared with properly designed laboratory experiments as well as three-dimensional finite elements numerical simulations for the innovative pothole patching materials.

高韧性，低粘度纳米分子树脂双环戊二烯（DCPD，C ₁₀ H ₁₂），经实验证明可有效修补破裂的沥青路面，并能显着提高其耐久性和使用寿命。本文基于微观力学和连续损伤力学，提出了三维微观力学框架，以预测这种创新的坑洞修补材料在劈裂张力试验（ASTM D6931）下的有效弹性损伤行为。在此微机械模型中，通过以某些代表性尺寸随机分配的多层涂层球形颗粒来近似和模拟不规则粗聚集体。基于多级均质化方法，将细骨料，沥青粘合剂（PG64-10），固化的DCPD（p-DCPD）和气孔配制成各向同性的弹性沥青胶泥基体。