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针对一些地区低温特点,对沥青混合料进行室内试验,分析温度、油石比、沥青种类和级配对混合料抗压强度的影响。结果表明,混合料抗压强度随温度的升高而降低:温度和沥青种类对抗压强度影响较大。通过对国内外橡胶沥青混合料应用的级配结构形式进行总结分析,结合不同级配橡胶沥青混合料的性能试验研究,选择沥青及其它外加剂的最佳用量。
According to the characteristics of low temperature in some areas, the asphalt mixture was tested in laboratory and the influences of temperature, ratio of oil to rock, asphalt type and gradation on the compressive strength of the mixture were analyzed. The results show that the compressive strength of the mixture decreases with increasing temperature: the temperature and the type of asphalt have a greater impact on the compressive strength. Based on the summary of the grading structure of rubber asphalt mixture applied at home and abroad, the optimum dosage of asphalt and other admixtures is selected according to the performance test of rubber graded asphalt mixture with different grades.