Abstract In this research, carbon black (CB) particles were produced from the pyrolysis of crumb rubber (CR), and nano-carbon black (NCB) was obtained from CB particles. A commonly used performance grade (PG) binder (PG 64-22) was modified with different dosages of CB and NCB particles. After the basic laboratory bitumen test, the penetration index and stiffness modulus of the modified bitumen were calculated. The cohesion and adhesion work between different combinations of modified bitumen and aggregates (quartzite, granite, limestone, and sandstone) were measured in the absence and presence of water. Results showed that the penetration index and stiffness modulus of the bitumen modified with CB and NCB particles increased, while the static contact angle decreased. Limestone and quartzite showed the lowest work of adhesion, whereas sandstone demonstrated the highest work of adhesion in wet conditions. According to compatibility parameter (CP) data, limestone and quartzite had the most compatible aggregates-bitumen structure. With the addition of higher CB and NCB percentages, the CP value depicted an increasing trend. Finally, according to two new statistical models, a direct relationship existed between the work of cohesion and stiffness modulus of the modified bitumen.

中文翻译：

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报废轮胎微纳米炭黑改性沥青表面自由能与刚度模量的关系

摘要 本研究通过胶粒（CR）热解制备炭黑（CB）颗粒，并以CB颗粒为原料制备纳米炭黑（NCB）。常用的性能等级 (PG) 粘合剂 (PG 64-22) 用不同剂量的 CB 和 NCB 颗粒改性。在基础实验室沥青试验后，计算出改性沥青的渗透指数和刚度模量。在不存在和存在水的情况下测量改性沥青和骨料（石英岩、花岗岩、石灰石和砂岩）的不同组合之间的内聚力和粘附功。结果表明，CB和NCB颗粒改性沥青的渗透指数和刚度模量增加，而静态接触角减小。石灰石和石英岩的粘附功最低，而砂岩在潮湿条件下表现出最高的附着力。根据相容性参数（CP）数据，石灰石和石英岩具有最相容性的骨料-沥青结构。随着 CB 和 NCB 百分比的增加，CP 值呈现增加趋势。最后，根据两个新的统计模型，改性沥青的黏聚力功和刚度模量之间存在直接关系。