采用正交试验方法分析集料吸水率、纤维用量、水泥掺量及成型温度这4个因素对沥青混合料最佳油石比的影响程度。

• The 4 factors, such as specific absorption of aggregate, dosage of fiber, dosage of cement and molding temperature, were assembled properly by orthogonal design method, the effects of the factors on the optimum proportion of asphalt were studied at the same time.