水工沥青混凝土低温抗裂性能的影响因素研究

发布时间：2019-04-01 18:14

【摘要】：水工沥青混凝土的低温抗裂性能是影响其工程应用的一个重要因素,目前国内采用冻断温度来评价水工沥青混凝土低温抗裂性能。本文依托呼和浩特抽水蓄能电站沥青混凝土面板的配合比设计,研究了不同沥青品种、沥青含量、骨料级配、填料含量等对沥青混凝土冻断温度的影响。试验结果表明,沥青性能是影响沥青混凝土低温冻断温度的关键因素,其中沥青的脆点和5℃延度与沥青混凝土的冻断温度有较好的相关性,而配合比对对冻断温度的影响较小。得到的结论可供相关工程及后续科研工作参考。
[Abstract]:Low-temperature cracking resistance of hydraulic asphalt concrete is an important factor affecting its engineering application. At present, freeze-break temperature is used to evaluate the low-temperature crack resistance of hydraulic asphalt concrete. Based on the mix ratio design of asphalt concrete face of Hohhot pumped storage power station, the effects of different asphalt varieties, asphalt content, aggregate gradation and filler content on freezing temperature of asphalt concrete are studied in this paper. The experimental results show that the asphalt performance is the key factor affecting the freezing temperature of asphalt concrete at low temperature, in which the brittle point and ductility of asphalt have a good correlation with the freezing temperature of asphalt concrete, and the freezing temperature of asphalt concrete is closely related to the brittle point of asphalt and the ductility of 5 鈩，

本文编号：2451767