改性沥青高温性能评价方法研究进展

Research Advance on High-temperature Properties Evaluation Methods of Modified Asphalts

在深入调查国内外改性沥青高温性能评价方法研究文献的基础上,总结了该领域的发展历史,评述了最新研究进展。结果表明,重复蠕变恢复试验的加载模式与实际沥青路面的交通状况较为接近,但其测试条件不应限定在线性范围。为了全面准确地评价改性沥青的高温性能,尚需深入研究改性沥青在较大应力条件下的非线性力学行为。

Based on deeply investigation of research literatures about evaluation methods of modified asphalts＇ high-temperature properties at home and abroad,this paper sums up the historical development and remarks upon the recent researches in this area.The results show that the loading modes of repeated creep and recovery test have a closer relationship with traffic loading of actual asphalt pavement.But the testing conditions shouldn＇t be limited within the liner viscoelastic ranges.Further study on nonlinear mechanical behaviors of modified asphalt under higher-stress conditions is needed to evaluate the high-temperature properties of modified asphalt roundly and correctly.