In this paper, a machine process to repair cracks in asphalt pavements by filling them with hot bitumen is demonstrated for the first time. We have characterized the quality of these fillings. Furthermore, the paper examines how the filling speed, temperature, bitumen type, crack width, crack irregularity, and the flow of hot bitumen affect the crack filling quality by the machine. In the laboratory we have used a 3D-printer as the machine to fill the cracks due to its simplicity. We have characterized the quality of the repaired cracks in terms of their porosity and shear and tensile strength. We have demonstrated that the bitumen flow, filling speed, and width and depth of cracks determine the quality of the filling and will need to be carefully controlled in a future autonomous crack filling device. The complex interaction between these parameters will need to be underpinned in future research.

在本文中，首次展示了一种通过用热沥青填充沥青路面裂缝来修复裂缝的机器工艺。我们已经描述了这些填充物的质量。此外，本文还研究了填充速度、温度、沥青类型、裂缝宽度、裂缝不规则性和热沥青的流动如何影响机器填充裂缝的质量。在实验室中，由于其简单性，我们使用 3D 打印机作为填充裂缝的机器。我们根据孔隙率、剪切强度和抗拉强度来表征修复裂缝的质量。我们已经证明，沥青流量、填充速度以及裂缝的宽度和深度决定了填充的质量，并且需要在未来的自主裂缝填充装置中进行仔细控制。