A bitumen polymer additive comprises a base of tire rubber crumbs in the amount of about 70 to about 90 percent by weight of tire rubber crumbs sized about 14 mesh or smaller. Added to that base is about 0.5 to about 5 percent by weight of a benzothiazole-based devulcanizing agent, about 0.3 to about 3 percent by weight of a C14-C18 heavy metal soap such as a zinc stearate, about 0.1 to about 3 percent by weight of an antiozonant, and about 0.1 to about 20 percent of a plasticizer such as a heavy oil. The additive polymer is used for producing an asphalt of superior quality, including lower initial viscosity and improved wear resistance.
沥青聚合物添加剂包括轮胎橡胶碎屑基料,按重量计,轮胎橡胶碎屑约占 70%至 90%,尺寸约为 14 目或更小。在该基料中加入约 0.5%至约 5%(按重量计)的
苯并噻唑类
脱硫剂、约 0.3%至约 3%(按重量计)的 C14-C18 重
金属皂(如
硬脂酸锌)、约 0.1%至约 3%(按重量计)的抗偶氮剂,以及约 0.1%至约 20%(按重量计)的
增塑剂(如重油)。添加剂聚合物用于生产质量上乘的
沥青,包括降低初始粘度和提高耐磨性。