温拌沥青感温性能及评价指标研究

发布时间：2018-04-29 03:21

本文选题：温拌沥青 + 感温性能　；参考：《中外公路》2014年01期

【摘要】：沥青的感温性能对路面高温抗车辙和低温抗变形的影响较为显著,因此,合理评价沥青的感温性能十分必要。该文利用不同温度下的针入度与软化点计算了掺加不同剂量EWMA-1的温拌沥青的针入度指数以及针入度-软化点指数,评价了感温性能,再测定不同温度条件下这几种温拌沥青的运动粘度,运用Matlab进行线性及WLF方程回归拟合,对比分析其粘-温关系曲线,进而分析了温拌沥青的感温性能及其评价指标。由此得出,普通沥青的感温性能可用针入度指数评价,而温拌沥青的粘-温关系较好地满足WLF方程,其感温性能评价需要指定温度条件。
[Abstract]:The temperature sensing performance of asphalt has a significant effect on the high temperature rutting resistance and low temperature deformation resistance of pavement, so it is necessary to evaluate the temperature sensing performance of asphalt reasonably. In this paper, the penetration index and penetration softening point index of warm mix asphalt with different dosage of EWMA-1 are calculated by using the penetration and softening point at different temperatures, and the temperature sensitivity is evaluated. Then the kinematic viscosity of these warm mix asphalt was measured under different temperature conditions. The linear and WLF equation regression fitting was carried out by Matlab, and the visco-temperature relation curve was compared and analyzed, and the temperature sensing performance and its evaluation index of warm mix asphalt were analyzed. It is concluded that the temperature sensing performance of common asphalt can be evaluated by penetration index, while the viscosity-temperature relationship of warm mix asphalt meets the WLF equation well, and the temperature sensing performance evaluation needs to specify temperature conditions.
【作者单位】：河南城建学院;
【分类号】：U414

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