6Vavrik, W. R., W. J. Pine, G. A. Huber, S. H. Carpenter, and R. Bailey:The Bailey Method of Gradation Evaluation: The Influence of Aggregate Gradation and Packing Characteristics on Voids in the Mineral Aggregate[J]. Journal of the Association of Asphalt Paving Technologists, 2001,(70):1-5.
7Kentucky Tansportation Cabinet. Effect of Water on Cohesion of Compacted Asphalt Mixtures[S]. Kentucky Method 64-423-03.