目前,我国在沥青路面大修中基本采取“废旧用新”的做法,即刨除老路面沥青后加铺新的沥青。据粗略计算,我国每年所废弃的路面沥青混合料要超过200万t,其中含有的沥青达10多万t,据预测,随着道路里程的逐年增加,废弃的路面沥青混合料也将逐年增加[1],若不加以有效利用,既浪费了大量不可再生的石油资源,又占用土地、污染环境、破坏生态等。 At present, our country in the asphalt pavement overhaul basically take “waste with the new ” approach, that is, after the old pavement asphalt paved new bitumen. According to a rough calculation, every year our country paves over 2 million tons of asphalt mixture, which contains more than 100,000 tons of asphalt. It is predicted that as the mileage of roads increases year by year, the amount of abandoned asphalt mixture will also increase year by year [1] Without effective utilization, not only was a large amount of non-renewable petroleum resources was wasted, but also land was taken up, polluting the environment and damaging the ecology.