中文摘要：

为了研究煤直接液化残渣（ direct coal liquefaction residue, DCLR）改性沥青混合料性能，制备10％DCLR（与基质沥青质量比）改性沥青混合料和复合DCLR（2％SBS＋15％橡胶粉＋10％DCLR）沥青混合料，并与热拌沥青混合料以及SBS改性沥青混合料性能对比．试验结果表明：DCLR的掺入可以提高沥青混合料的高温稳定性和水稳定性能，但对其低温性能有损伤；复合DCLR沥青混合料的低温性能得到了很大程度的提高，其高低温性能和水稳定性明显高于SBS改性沥青混合料．

英文摘要：

To study the performance of the DCLR modified asphalt mixture, the 10% DCLR （by mass of SK- 90 asphalt） modified asphalt mixture and the compound DCLR （2% SBS ＋ 15%rubber powder ＋ 10% DCLR） modified asphalt mixture are prepared. The performances of the SK-90 asphalt mixture, SBS modified asphalt mixture are compared to 10% DCLR modified asphalt mixture and compound DCLR modified asphalt mixture. The results show the DCLR can improve the high-temperature performance and water stability of asphalt mixture but the low-temperature performance is damaged. The low-temperature performance of the compound DCLR modified asphalt mixture is improved greatly. Meanwhile, the high-temperature performance, low-temperature performance and water stability of compound DCLR modified asphalt mixture are higher than those of SBS modified asphalt mixture obviously.