为研究温拌剂对废塑/苯乙烯-丁二烯-苯乙烯三嵌段共聚物（SBS）复合改性沥青流变性能的影响，在沥青中加入不同质量分数（1.0%、1.2%、1.4%）的BMH型温拌剂，借助傅里叶红外光谱测试（FTIR）、动态剪切流变试验（DSR）、多应力蠕变恢复试验（MSCR）以及低温弯曲梁流变试验（BBR）分析BMH对废塑/SBS复合改性沥青流变性能的影响。结果表明：BMH显著提高废塑/SBS复合改性沥青的高温抗变形能力，降低其应力敏感性。当温拌剂质量分数为1.2%时，改善效果最优，1.4%掺入质量分数的提升效果不升反降；BMH可提高废塑/SBS复合改性沥青的中温抗疲劳性能，以1.2%的掺入质量分数提升效果最为明显，其他掺入质量分数的提升效果与之相近；BMH可以改善废塑/SBS复合改性沥青低温流变性能，且当掺入质量分数为1.4%时沥青应力松弛能力最好，抗低温开裂性能最优。

In order to study the effect of warm mixture on the rheological properties of waste plastic/styrene-butadiene-styrene triblock copolymer (SBS) composite modified asphalt, BMH warm mixture with different mass fraction (1.0%, 1.2% and 1.4%) was added into asphalt. The effects of BMH on the rheological properties of waste plastic/SBS composite modified asphalt were analyzed by Fourier transform infrared spectroscopy (FTIR), dynamic shear rheology (DSR), multi-stress creep recovery test (MSCR) and low temperature bending beam rheological test (BBR). The results show that BMH can significantly improve the high temperature deformation resistance and reduce the stress sensitivity of waste plastic/SBS composite modified asphalt, and when the warm mixture mass fraction is 1.2%, the improvement effect is the best, and the improvement effect of 1.4% mass fraction does not increase but decreases. BMH can improve the medium temperature fatigue resistance of waste plastic/SBS composite modified asphalt, the improvement effect of 1.2% content is the most obvious, and the improvement effect of other content is similar. BMH can improve the low-temperature rheological properties of waste plastic/SBS composite modified asphalt, the asphalt stress relaxation capacity is the best when the mass fraction is 1.4%, and the low-temperature cracking resistance is the best.