According to the axial load test Of the constant speed rate, the paper measures the changes of the mixture trials with different asphalt volumes ( asphalt-aggregate ratio), calculates the shear damage modulus of the mixture, and discloses the influence law of the asphalt volume on the shearing modulus of the mixture, so as to provide some reference for the optimization of the asphalt mixture gradation.%通过等速率轴向加载试验,测试不同沥青用量（即油石比）的混合料试件变形情况,计算出混合料的剪切破坏模量,揭示了沥青用量对混合料剪切模量的影响规律,为沥青混合料级配优化提供了一定的参考。
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