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采用贝雷法设计排水性沥青混合料级配,并针对排水性沥青混合料的特殊性,提出采用“预留空隙率”进行整体级配设计。试验结果表明,用贝雷法设计的排水性沥青混合料可以预先控制空隙率大小并具有良好的路用性能,证明了贝雷法设计排水性沥青混合料的可行性。
The design of the drainage asphalt mixture by the Berea method is adopted. In view of the particularity of the drainage asphalt mixture, the “gradation reserved” is proposed for the overall grading design. The test results show that the drainage asphalt mixture designed by Bere method can control the void fraction in advance and has good road performance, proving the feasibility of designing the drainage asphalt mixture by the Berea method.