基于复合改性沥青混合料耐久性研究

STUDY ON DURABILITY OF CALCIUM SULFATE WHISKER AND POLYESTER FIBER COMPOSITE MODIFIED ASPHALT MIXTURE

为了延长道路的使用寿命,提高其抗疲劳耐久性,文中进行基质沥青、硫酸钙晶须改性沥青、聚酯纤维改性沥青、硫酸钙晶须和聚酯纤维复合改性沥青混合料的试验对比,探究掺加剂对沥青混合料抗疲劳耐久性的影响。试验表明同等条件下,抗疲劳性能强弱为硫酸钙晶须和聚酯纤维复合改性沥青混合料>聚酯纤维改性沥青混合料>硫酸钙晶须改性沥青混合料>普通沥青混合料。

This paper explores the effect of asphalt mixture on fatigue resistanceto extend the service life of the road.The experimental comparison of matrix asphalt,calcium sulfate whisker modified asphalt,polyester fiber modified asphalt,calcium sulfate whisker and polyester fiber composite modified asphalt mixture was carried out.Tests results show thattheincorporation of two materials of calcium sulfate and polyester fiber makes the best durability of the asphalt mixture to increase fatigue resistance significantlyunder the same situation.