Bonifiber纤维及SBS改性沥青混合料性能的试验研究

对SBS改性沥青、70^#沥青的常规性能进行对比检测，并进行动态剪切试验和直接拉伸试验，评价沥青胶结料的高、低温和疲劳性能。然后，根据对70^#沥青及SBS改性沥青混合料掺加0．25％博尼维纤维后的试验，对比分析了70^#沥青混合料、SBS改性沥青混合料、掺加纤维的70^#沥青混合料和掺加纤维的SBS改性沥青混合料的高温稳定性、低温抗裂性、水稳性以及抗老化性能等路用性能．结果表明，SBS改性沥青和博尼维纤维沥青具有很好的高、低温和疲劳性能，能够大幅提高混合料的高温性能，对其他路用性能也有一定改善．

Test Research on the Road Performance of Asphalt Mixtures with Bonifibers and SBS Modified

The general performances of SBS modified asphalt and 70^# asphalt were compared, and the dynamic shear rheometer tests were adopted to evaluate the temperature stability and anti-fitigue properity of them. Some laboratory tests were carried out to investigate the road performances, such as high temperature stability, water stability, low temperature crack-resistance and anti-agging performance, for the mixtures of 70^# alphalt, SBS asphalt, and the ones added 0.25% Bonifibers. It is indicated that the G/sinδ and G＊ sinδ indices of SBS asphalt and the fiber asphalt are far greater than the 70^# asphalt＇s, and the tensile damage strength and strain are also greater. The temperature stability and anti-fitigue properity of SBS asphalt and the fiber asphalt are improved distinctly, but the improvement effects of the fiber asphalt are inferior to SBS asphalt. The road performances are also enhanced in some degree.