填料对沥青胶浆路用性能的影响

采用流变学方法定量研究填料对沥青胶浆性能的影响，所用填料包括矿粉、水泥和纤维．结果表明：填料能够明显提高沥青胶浆的高温性能，但不同填料的影响程度不同；在相同掺量下，水泥优于矿粉，聚酯纤维优于玄武岩纤维．通过沥青混合料的马歇尔稳定度试验与CPN车辙试验证实了以上结论的正确性．另外，在沥青胶浆中掺入填料还可以明显提高胶浆的抗疲劳因子，所以，采用科学的方法确定填料的最佳掺量是平衡沥青胶浆高温性能与抗疲劳性能的一种手段．

Effect of Fillers on the Pavement Performance of Asphalt Binder

The effects of fillers, such as mineral filler s, cement and fibers, on the pavement performance of asphalt binder are quantitativ ely investigated by rheology methodology. The results show that fillers can obvi ously improve the high-temperature performance of asphalt binder with different degrees, and that, in the same proportion of mixture, cement has a stronger im proving effect than mineral filler, and so does polyacrylonitrile fiber than bas alt fiber. These conclusions are then proved by Marshall stability test and CPN rutting test of asphalt mixtures. Moreover, it is found that, after the addition of fillers, the fatigue parameter of asphalt binder is obviously improved. So, there develops a scientific method which is effective in deciding the optimu m filler content, thus balancing the high-temperature performance and the fatig ue performance of asphalt binder.