高模量沥青及混合料疲劳性能评价研究

发布时间：2018-05-17 14:48

本文选题：高模量沥青混合料 + 疲劳因子　；参考：《材料导报》2014年S2期

【摘要】：为全面分析高模量沥青及混合料的疲劳性能,对两种高模量添加剂不同掺量下(添加剂分别为ZQ-2及ECB,掺量分别为占沥青质量5%、7%、10%)的高模量沥青进行动态剪切流变试验,研究其疲劳因子随掺量的变化规律;同时,对高模量沥青混合料进行四点疲劳梁试验,分析其疲劳寿命的规律,并与基质沥青混合料对比。试验结果表明,掺加ZQ-2的高模量沥青疲劳因子随掺量提高有明显的上升趋势,即疲劳性能随掺量变大而下降;而掺加ECB的高模量沥青疲劳因子随掺量提高变化规律不明显,掺量为10%时疲劳性能最佳。此外,两种高模量沥青混合料疲劳性能随掺量提高呈现不同的变化趋势,但都优于基质沥青混合料的疲劳性能。
[Abstract]:In order to comprehensively analyze the fatigue performance of high modulus asphalt and its mixture, the dynamic shear rheological tests were carried out on the high modulus asphalt with two kinds of high modulus additives (ZQ-2 and ZQ-2, respectively, with the content of 5% of asphalt mass). At the same time, the fatigue life of high modulus asphalt mixture was tested by four-point fatigue beam test, and the fatigue life of high modulus asphalt mixture was compared with that of base asphalt mixture. The experimental results show that the fatigue factor of high modulus asphalt with ZQ-2 increases obviously, that is, the fatigue energy decreases with the increase of the content of ECB, but the fatigue factor of high modulus asphalt with ECB does not change obviously with the increase of the content of ECB. The fatigue performance is the best when the content is 10. In addition, the fatigue properties of the two kinds of high modulus asphalt mixtures show different trends with the increase of the content of asphalt, but both of them are superior to the fatigue performance of the base asphalt mixture.
【作者单位】：南京工业大学交通学院;南京东道路桥工程技术咨询有限公司;
【分类号】：U414

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