加入聚脂纤维对马歇尔实验指标的影响

Effects of Adding Polymer Fiber on Marshall Experimental Parameters

纤维的加入会影响沥青的路用性能,同时又对混合料有着加筋与阻裂的作用。研究表明,纤维在混合料中的质量百分比以及纤维的分散特性均对纤维沥青混合料有着明显影响。本文通过对加入不同纤维用量沥青混合料的马歇尔实验,研究沥青混合料马歇尔实验指标的变化,特别是最佳沥青用量和密度,同时分析其产生变化的原因,为指导纤维混合料设计和施工提供依据。

Addition of fiber will impact the performance of asphalt used in roads, and has the function of enforcement and resistance on mixtures at mean time. It is indicated that mass ratio of fiber in mixtures and eharar＇ters of fitter distribution both have obvious impaet on asphalt mixtures. By adding diffemnt amount of fiber in asphalt mixtures Marshall Experiment, the authors study the variation of expefimental parameters of asphalt mixtures, especially asphalt optimum content and asphah density, as well as analyze the masons of the variation, which will offer the reference for the design and construction of fiber-enhaneed asphalt.