2019 Volume 7 Issue 2 Pages 84-89
The permeability test for permeable asphalt pavement cannot be applied to soil-based pavement in the field because this test erodes the ground surface due to the high positive applied pressure. Furthermore, the permeability test is based on the time required for a certain amount of water seepage to occur, which is not a hydraulic conductivity parameter that has a physical meaning. Therefore, in the present paper, we propose a measurement technique for water permeability and soil-water retentivity by field measurements using a suction infiltrometer. The results revealed that, even if the pavement layer is 10 cm in thickness, the proposed method can determine the field-saturated hydraulic conductivity. Furthermore, we determined the soil-water characteristic curve for soil-based pavement using the simultaneously measured water entry value.
