掺加MAMF纤维对沥青混凝土低温性能的影响

The effect in the low temperature property of asphalt concrere after adding MAMF fiber

由于高寒、高海拔地区气温低、昼夜温差大,造成沥青混凝土路面抵抗低温变形能力不足,面层网裂,耐久性差。为了延长沥青混凝土路面耐久性,通过掺加MAMF纤维提高沥青混凝土的抗低温性能。经过试验,MAMF纤维的最佳掺量为0.2～0.4%,可使沥青混凝土达到既耐久又经济的路用要求。

As low temperature and large difference in temperature between day and night in the alpine and high altitude area,this situation resulted in the lack of the capacity of resistance to low temperature deformation in the asphalt concrete pavament,net-shaped cracks in bituminous pavement and poor durability.In order to improve the durability,some MAMF fiber were added into the asphalt concrete in an experiment.The result shows that the best adding proportion is 0.2% to 0.4% and this can meet the requirement in durability and economics to the asphalt concrete road.