为评估15℃劈裂强度作为沥青路面交工验收指标的合理性，选择Sup-13、Sup-20、ATB-25和SMA-13四种沥青混合料，研究15℃劈裂强度与芯样压实度及沥青混合料路用性能的相关性。结果表明，沥青混合料15℃劈裂强度与芯样压实度呈正相关，当压实度为最大理论密度的93%时，Sup-13、Sup-20、SMA-13和ATB-25的劈裂强度分别为1.260MPa、1.423MPa、1.066MPa和1.470MPa。15℃劈裂强度与60℃动稳定度、冻融劈裂强度比和残留稳定度呈正相关，与低温破坏应变呈负相关，相关系数不低于0.6241。

In order to evaluate the rationality of 15℃ splitting strength as the acceptance index of asphalt pavement, Sup-13, Sup-20, ATB-25 and SMA-13 asphalt mixtures are selected in this paper. The correlation between the splitting strength at 15℃, core compactness and road performance of asphalt mixture is studied. The results show that when the compaction degree is 93% of the maximum theoretical density, the splitting strengths of Sup-13, Sup-20, SMA-13 and ATB-25 are 1.260MPa, 1.423MPa, 1.066MPa and 1.470MPa respectively. The splitting strength at 15℃ is positively correlated with the dynamic stability at 60℃, the freeze-thaw splitting strength ratio and the residual stability, and negatively correlated with the low temperature failure strain, and the correlation coefficient is not less than 0.6241.

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甘肃省科技计划重点研发项目（20YF3GA044，21YF11GA013）；甘肃省交通运输厅科学项目（2020-04，2021-21）