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国内外资料指出,当交通量和货运量很大时,石油沥青不能保证路面的耐久性。可以采用外加剂改善沥青的性质。多年经验证明,用高分子化合物(其中包括橡胶)作沥青改性处理的地沥青混凝土路面的使用年限将增加一倍以上。目前,在苏联生产商品合成橡胶时,还生成一种疏松质的橡胶凝聚物副产品,这种副产物是在橡胶生产过程中最早的沉淀物,它的化学成份相对于每种橡胶产品是稳定
Domestic and foreign information pointed out that when traffic and cargo volume is large, the asphalt can not guarantee the durability of the road. Additions may be used to improve the properties of the asphalt. Years of experience have shown that the service life of asphalt concrete pavement modified with a polymer compound, including rubber, will more than double. At present, when the Soviet Union manufactures commercial synthetic rubber, a byproduct of loose rubber agglomerates is formed which is the earliest precipitate in the rubber production process and its chemical composition is stable with respect to each rubber product