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鉴于现有冷补沥青混合料易松散的特性,通过进行不同纤维掺量下冷补沥青混合料的开裂能试验、冻融劈裂试验和飞散试验,分析纤维掺量对冷补沥青混合料路用性能的影响。试验结果表明:纤维的掺入有助于改善混合料水稳定性,但纤维掺量过多会导致混合料拌合困难,容易产生离析,影响混合料之间的粘结性能,反而降低混合料水稳定性;纤维的掺入对冷补沥青混合料的抗松散性是有利的,且纤维掺量适当增加有助于改善其结构整体性;混合料低温抗裂性随纤维掺量的增加有所降低,初步分析是由于养生不充分引起的。
In view of the loose nature of the existing cold-asphalt mixture, the cracking energy, the freeze-thaw splitting test and the fly-ash test of the cold-mix asphalt mixture under different fiber contents were carried out. The effects of fiber content on the cold- With the impact of performance. The test results show that the incorporation of fiber helps to improve the water stability of the mixture, but excessive fiber content will lead to mixing difficulties, easy to produce segregation, affecting the bonding performance between the mixture, but reduce the mixture Water stability; fiber incorporation is good for anti-loosening of cold-mix asphalt mixture, and proper increase of fiber content will help to improve its structural integrity; low-temperature crack resistance of mixture increases with the increase of fiber content Reduced, the initial analysis is due to inadequate health care caused.