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针对排水性沥青混合料渗透系数的测试方法和数值大小展开研究。对于渗透系数的测量方法,采用自己研制的室内垂直渗透系数测定仪进行测定,试件为圆柱状,高为15 cm,直径为15 cm,试件成型采用旋转压实仪完成。同时根据《公路沥青路面施工技术规范》(JTG F 40-2004)中推荐的3种级配研究室内垂直渗透系数的规律并给出推荐值。
Aiming at the test method and numerical value of the permeability coefficient of drainage asphalt mixture, For the measurement of permeability coefficient, the vertical permeability coefficient tester developed by ourselves was used for the determination. The specimen was cylindrical with a height of 15 cm and a diameter of 15 cm. The forming of the specimen was completed by rotary compactor. At the same time, the law of indoor vertical permeability coefficient and the recommended value are studied according to the three kinds of grading recommended in “Technical Specifications for Construction of Highway Asphalt Pavement” (JTG F 40-2004).