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目前新规范对于沥青混合料低温抗裂性能的评价,推荐采用温度-10℃的小梁弯曲蠕变试验。为了更全面地评价沥青混合料的低温性能,本文提出了低温敏感性指数。从大量试验结果来看,低温敏感性指数能够有效全面地评价沥青混合料的低温性能。
At present the new code for the evaluation of low temperature cracking resistance of asphalt mixture, the recommended temperature of -10 ℃ trabecular bending creep test. In order to more fully evaluate the low temperature performance of asphalt mixture, this paper presents a low temperature sensitivity index. From a large number of test results, the low temperature sensitivity index can effectively and comprehensively evaluate the low temperature performance of asphalt mixture.