本文研究了用聚合物与煤焦油沥青反应减少其中的致癌多环芳烃。

The article aims to reduce carcinogenic PAHs of coal tar pitch.

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煤沥青经氧化聚合后，挥发分由52.22%下降到16%以下，相应的甲苯不溶物含量由30%增加到81%以上。

After oxidative polymerization of pith, its volatile matter is decreased from 52.22% to 16%, and its toluene insoluble matter is increased from 30% to 81%.

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它通过把聚合物掺入道路沥青中而改善其使用性能，能显著延长路面寿命、降低噪声、提高行车舒适性和安全性。

The polymer is added into the asphalt to improve the performance of the pavement, extend the life, reduce the noise, and improve the driving comfort and safety.

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