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研究水对沥青混合料疲劳性能的影响,初步分析水使混合料抗疲劳性能下降的力学机理。本研究采用试验模拟的方法,采用4种级配沥青混合料,对试件设计了两种水处理条件,与未经水处理试件的疲劳试验结果进行对比,并运用统计分析方法对试验数据进行处理。与未经水处理试件相比,经两种水处理条件处理后试件的疲劳寿命均缩短。水使沥青混合料力学性能发生改变而使其疲劳寿命缩短,初步分析水使沥青混合料力学性能发生改变而使其疲劳寿命缩短的原因可能与水的作用使沥青混合料劲度模量指标减小有关。
The influence of water on the fatigue properties of asphalt mixture was studied, and the mechanical mechanism of the water resistance to the anti-fatigue performance of the mixture was preliminary analyzed. In this study, the experimental simulation method, the use of four kinds of graded asphalt mixture, the design of the two pieces of water treatment conditions, compared with the fatigue test results without water treatment specimens were compared, and the use of statistical analysis of test data For processing. Compared with the non-water-treated specimens, the fatigue life of the specimens after the two water-treatment conditions were shortened. Water causes the mechanical properties of asphalt mixture to be changed to shorten its fatigue life. The preliminary analysis of the reasons why water changes the mechanical properties of asphalt mixture to shorten the fatigue life may be caused by the action of water, which makes the asphalt mixture stiffness modulus index decrease Small related.