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采用半圆弯曲疲劳试验和间接拉伸疲劳试验对乳化沥青就地冷再生混合料在不同应力比下的疲劳性能进行研究,主要分析水泥含量和级配对乳化沥青就地冷再生混合料疲劳性能的影响,并与热拌沥青混合料进行对比。结果表明:水泥含量较高有利于乳化沥青就地冷再生混合料在低应力比下的疲劳性能,而对高应力比下的疲劳性能不利;级配对乳化沥青就地冷再生混合料疲劳性能影响不大,并且相同应力比下,乳化沥青就地冷再生混合料的疲劳寿命要长于普通热拌沥青混合料。
The semi-circular bending fatigue test and indirect tensile fatigue test were used to study the fatigue properties of cold-reclaimed asphalt mixture in situ at different stress ratios. The effects of cement content and gradation on the fatigue properties of cold-reclaimed asphalt mixture , And compared with hot mix asphalt. The results show that the higher cement content is beneficial to the fatigue performance of cold-reclaimed asphalt mixture in situ at low stress ratio, but not the fatigue performance at high stress ratio. The effect of gradation on the fatigue properties of cold reclaimed asphalt mixture Not large, and the same stress ratio, the fatigue life of the cold reclaimed asphalt emulsion mixture on site is longer than that of the ordinary hot asphalt mixture.