Dynamic behavior of sand-bitumen mixtures was investigated using a series of dynamic hollow cylinder tests. The effects of different parameters including bitumen content, loading frequency and bitumen viscosity on shear modulus and damping ratio of the mixtures were evaluated in detail. The results showed the added bitumen increased shear modulus of the mixture up to about 20% for bitumen content of 3.5% in the range of shear strains between 0.01% and 0.1%. Such an increase was negligible at shear strains beyond 0.3%. Moreover, the added bitumen boosted damping ratio of the mixtures up to about 10% for bitumen content of 3.5% at shear strains beyond 0.3% while this increase was only about 5% at shear strains less than about 0.1%. Damping ratio and shear modulus of the mixtures changed with the frequency of applied loading mainly due to the viscous behavior of the bitumen. It was also found that using more viscous bitumen augmented damping ratio and shear modulus of the mixtures.

使用一系列动态空心圆柱试验研究了砂沥青混合物的动态行为。详细评估了沥青含量，加载频率和沥青粘度等不同参数对混合物的剪切模量和阻尼比的影响。结果表明，当沥青含量为3.5％时，在0.01％至0.1％的剪切应变范围内，添加的沥青可使混合物的剪切模量提高至约20％。当剪切应变超过0.3％时，这种增加可以忽略不计。而且，当剪切应变超过0.3％时，沥青含量为3.5％时，添加的沥青使混合物的阻尼比提高至约10％，而当剪切应变小于约0.1％时，该增加仅为约5％。混合物的阻尼比和剪切模量随施加载荷的频率而变化，这主要归因于沥青的粘性行为。还发现使用更多的粘性沥青增加了混合物的阻尼比和剪切模量。