沥青路面冷再生混合料疲劳性能

Fatigue properties of cold-recycled asphalt mixture

通过劈裂拉伸和控制应力的方式对再生混合料的疲劳性能进行了室内试验研究,总结了疲劳方程和疲劳曲线,分析了温度对疲劳性能的影响,并与相似试验条件下一般水泥稳定类材料的疲劳规律进行了比较。结果表明,随温度降低再生混合料的疲劳阻抗提高了,同时其疲劳寿命对应力水平的敏感程度也有所增强,在高应力水平下其具有比一般水泥稳定类材料更为优越的疲劳性能。

The paper studied the fatigue properties of recycled mixture under stress-controlling mode through cleavage test, analyzed the influence of temperature on them and made properties comparison with general cement-stabilized materials in some condition. The research indicates that with the temperature dropping, the fatigue impedance is enhanced and the susceptibility of fatigue life towards the stress level is also raised. The recycled mixture possesses more superior fatigue properties than general cement-stabilized materials under high stress levels.