沥青是一种热塑性材料,是高分子量的有机物质。人类从古代起就已利用它受热流动的物理性能制模塑品或作粘合剂。但其物理性能受温度影响甚大,高温变形流动,低温硬脆,使用甚为不便,人们就用各种材料改变其性质。近代改性沥青有了很大发展,最重要的方法之一就是使用橡胶改变沥青性能。 Asphalt is a thermoplastic material and is a high molecular weight organic material. Humans have used the physical properties of their heated fluids for molding or adhesives since ancient times. However, its physical properties are greatly affected by temperature, high temperature deformation flow, low temperature and brittle, very inconvenient to use, people use a variety of materials to change its properties. Modern modified asphalt has made great progress. One of the most important methods is to use rubber to change asphalt performance.