中文摘要：

对照优质道路沥青改性剂TLA,考察了六种煤基重质产物对滨州90#沥青的改性作用及作用原理。实验结果表明,六种改性剂对滨州90#沥青均表现出一定的改性作用。依据美国ASTM D5710-95以及英国BSI BS3690对TLA改性沥青的标准,六种改性沥青中,四种符合标准要求,其余两种不符合延度指标要求。FT-IR谱图分析表明,煤液化或煤油共处理重质产物的添加,没有生成新官能团,但使官能团的分布发生了变化,从而改善了基质沥青的路用性能,添加TLA,可增加C=O和S=O极性官能团,可增加沥青与石料的作用;煤焦油沥青过高的芳香结构,妨碍了其与基质沥青的混合作用。结合四组分分析结果,基于沥青胶体化学理论分析,发现不符合要求的改性沥青具有较高的饱和分含量,导致了较小的CI值（胶体指数）,不利于沥青胶体结构的稳定。按线性加和法计算得到的改性沥青CI值与实测值的差距表明,改性过程包含有一定程度的化学反应。

英文摘要：

In comparison with the supreme commercial paving asphalt modifier TLA,three heavy products derived from the co-processing of coal with FCC slurry and one heavy product from a bench scale continuing coal liquefaction process have a similar modification ability to the same base asphalt（Binzhou 90#）.Two modified asphalts（one by coal tar pitch and another one by the product from the co-processing） are excluded due to the dissatisfaction on ductility.FT-IR analysis shows that the addition of coal-derived heavy products does not form any new functional group,but results in a new distribution of the functional groups which can improve the behavior of the base asphalt.The addition of TLA can increase C=O and S=O functional groups,which should be favorable for the interaction of asphalt binder and limestone.The higher aromaticity of the coal tar pitch may inhibit its mixing and interaction with the base asphalt.Two unsatisfied modified asphalts have a lower colloidal index（CI）.The difference between the theoretically calculated CI and the experimental CI of modified asphalt indicates that the chemical reaction may occur between the base asphalt and the additives.