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采用一个沥青混合料小梁试件大样本,在相同条件下进行了应变控制疲劳试验,利用IMAQ数字图像处理软件对疲劳试验后的小梁试件中部纯弯段的内部结构和组成进行了处理和分析,定义了沥青混合料内部结构和组成的指标,进一步利用SPSS软件分析建立了疲劳试验结果参数与内部结构和组成指标的关系模型。分析表明,沥青混合料的疲劳寿命与沥青混合料内部结构和组成指标密切相关,沥青混合料疲劳寿命内部结构和组成的差异直接造成了相同条件下沥青混合料疲劳寿命的巨大差异,揭示了沥青混合料内部结构和组成对沥青混合料疲劳性能的影响规律。
A large sample of bituminous mixture specimen was used to carry out the strain control fatigue test under the same conditions. The internal structure and composition of the pure bending part in the middle of the beam specimen after fatigue test were processed by IMAQ digital image processing software And analysis and definition of the internal structure and composition of asphalt mixture indicators, the use of SPSS software to further establish the relationship between fatigue test results parameters and internal structure and composition of indicators. The analysis shows that the fatigue life of asphalt mixture is closely related to the internal structure and composition index of asphalt mixture. The difference of internal structure and composition of asphalt mixture fatigue life directly causes the huge difference in fatigue life of asphalt mixture under the same conditions, Influence of Internal Structure and Composition of Mixture on Fatigue Properties of Asphalt Mixtures.