为降低沥青混合料生产及施工过程中产生的能源损耗与环境污染，以橡胶烃油为基体制备常温改性剂。采用差示扫描量热法、红外光谱仪以及离析试验，系统评价了常温改性剂的微观性能及其与沥青的相容性。在此基础上，利用常温改性剂对基质沥青进行改性，制备常温改性沥青，明确了常温改性沥青性能评价体系及其混合料组成设计方法，基于车辙试验、残留稳定度试验和冻融劈裂试验评价了常温改性沥青混合料的高温性能与水稳定性，基于单轴抗压强度试验分析了混合料的强度增长规律。结果表明：（1）常温改性剂小分子物质与杂质含量较少，且与基质沥青相容性较好；（2）常温改性沥青的性能评价体系不宜采用道路石油沥青与液体石油沥青的性能评价体系，而应结合交通量与气候构建；（3）常温改性沥青混合料应采用幂函数构建骨架矿料级配，根据矿料最紧密状态确定最佳油石比；（4）常温改性沥青混合料高温性能有待进一步提升，但常温养生15d的高温性能可满足现行规范要求；（5）常温改性沥青混合料的水稳定性亦满足现行规范要求；（6）随着养护龄期增长，常温改性沥青混合料的单轴抗压强度先增大后减小，且养护龄期为14d时，强度达到峰值，为13.23MPa。

In order to reduce the energy loss and environmental pollution in the production and construction of asphalt mixture, the rubber hydrocarbon oil was used as the matrix to prepare the modifier at normal temperature. The differential scanning calorimetry, infrared spectrometer and segregation test were used to systematically evaluate the micro performance of normal-temperature modifier and its compatibility with asphalt. On this basis, the normal-temperature modifier was used to modify the matrix asphalt to prepare the normal-temperature modified asphalt. The performance evaluation system and mixture composition design method of the normal-temperature modified asphalt were defined. Based on rutting test, residual stability test and freeze-thaw splitting test, the high-temperature performance and water stability of the normal-temperature modified asphalt mixture were evaluated, and the strength growth law of the mixture was evaluated based on the uniaxial compressive strength test. The results show that: (1)the content of small molecular substances and impurities in the normal-temperature modifier is less, and its compatibility with the matrix asphalt is good; (2)the performance evaluation system of the normal-temperature modified asphalt should not be the performance evaluation system of the road asphalt and the liquid asphalt, but should be proposed in combination with the traffic volume and climate; (3)the normal-temperature modified asphalt mixture should adopt the power function to build the skeleton mineral aggregate gradation, and determine the best ratio of oil and stone with the closest state of mineral aggregate; (4)the high-temperature performance of the normal-temperature modified asphalt mixture needs to be further improved, however, its high-temperature performance meet the requirements of current specifications when it is cured at normal temperature for 15 days; (5)the water stability of the normal-temperature modified asphalt mixture meets the requirements of current specifications; (6)with the increase of curing age, the uniaxial compressive strength of normal-temperature modified asphalt mixture first increases and then decreases, and when the curing age is 14 days, the strength reaches the peak value of 13.23MPa.