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为了选择更好的排水性沥青混合料耐久性改善措施,文章对使用高粘度沥青、PG76-22SBS改性沥青、PG70-22SBS改性沥青、消石灰、纤维的排水性沥青混合料进行不同条件的飞散试验,从而评价添加剂对排水性沥青混合料飞散损失的影响。试验结果表明:沥青60℃动力粘度越高,排水性沥青混合料飞散损失越小;消石灰降低了排水性沥青混合料的耐久性;聚酯纤维和矿物纤维可以明显减少排水性沥青混合料的飞散损失;木质素纤维并不能减少排水性沥青混合料的飞散损失。
In order to choose a better measure to improve the durability of the drainage asphalt mixture, the article uses the high viscosity asphalt, PG76-22SBS modified asphalt, PG70-22SBS modified asphalt, slaked lime, fiber drainage asphalt mixture to fly under different conditions Test to evaluate the impact of additives on the drainage loss of drainage asphalt mixture. The results show that the higher the dynamic viscosity of asphalt is, the less the flying loss of drainage asphalt mixture is. The slaking lime reduces the durability of drainage asphalt mixture. Polyester fiber and mineral fiber can obviously reduce the scattering of drainage asphalt mixture Loss; Lignin fibers do not reduce the flying loss of the drainage asphalt mixture.