美国每年生活消费与工矿残渣产生大量废品，一般是作为垃圾埋掉或烧毁，但仍污染地下水源，花费又大，在不损害路用材料品质，不增加混合料费用，且几年后不产生新废品的条件下，适当地掺入路用沥青混凝土中，以利用废品。经试验研究发现：加热后的沥青混凝土能利用的废品见表1 Every year, the United States consumes a large amount of wastes from industrial and mining residues, which are usually burned or burned as garbage but still pollute groundwater sources, which is expensive and without damaging the quality of road materials without increasing the cost of the compound materials and not generating a few years later Under the conditions of new waste, properly mixed with road asphalt concrete to make use of waste. The experimental study found that: heating asphalt concrete waste can be used in Table 1