SMA沥青混合料改性沥青玛蹄脂的性能

从SMA沥青混合料改性沥青玛蹄脂原材料的测试分析出发，测试分析了材料配比、纤维种类、粉胶比及温度对沥青玛蹄脂性能的影响。试验测试了3种改性沥青玛蹄脂不同粉胶比、不同温度条件下的针入度、延度和软化点，并进行了相关性分析。结果表明：几种纤维玛蹄脂的延度与粉胶比具有很好的线性关系，此规律可用于预估温度一定时，不同粉胶比时沥青玛蹄脂的延度。粉胶比一定时，延度与温度之间有良好的线性关系，可用于预估低温下沥青玛蹄脂的延度。最后，推荐了适合高温多雨气候的不同纤维沥青玛蹄脂粉胶比范围以及纤维掺量。

Performance of modified asphalt matrix in SMA mixture

Through testing and analyzing the materials of modified asphalt matrix in SMA mixture, the effects of the ratio of filler to asphalt, temperature and fiber species on the performance of modified asphalt matrix are studied. The penetration, ductility and soften point of three kinds of modified matrix asphalt are tested, the correlation of the tested datum is analyzed. It is found that the ductility of different kinds of asphalt matrix has good linear relationship with the ratio of filler to asphalt, and the regularity can be used in estimating the ductility in different ratio of filler to asphalt at the same temperature~ the ductility has good linear relationship with temperature under the condition of the same ratio of filler to asphalt, this conclusion can be used in estimating the ductility of asphalt matrix under low temperature. A reasonable scope of the ratio of filler to asphalt of different kinds of asphalt matrix and the dosage of fiber that used in matrix are presented for hot and rainy area. 13 tabs, 4 figs, 8 refs.