PAVEMENT PERMEABILITY EVALUATION METHOD, PERMEABILITY TESTING APPARATUS, AND PERMEABILITY TESTING MACHINE

摘要

PROBLEM TO BE SOLVED: To evaluate a permeability in a state adapted to use in an actual pavement body. SOLUTION: An upper surface and a bottom surface of a tank 11 are opened. The tank 11 is installed on a road surface via a rubber ring 13 and oil clay 15. Water is fed into the tank 11 from a tank 20 by a pump 30. The tank 11 is provided with a potentiometer 12 for detecting a water level. A signal from the potentiometer 12 is outputted to a controller 40. The controller 40 controls the amount of water feeding of the pump 30 by outputting a pump capacity control signal in such a way that the water level in the tank 11 may become at a prescribed water level H0. By visually observing a scale 20a of the tank 20 and detecting the amount of water reduction in the tank 20 in a prescribed time, the permeability of pavement is evaluated. COPYRIGHT: (C)2004,JPO&NCIPI