MECHANISM AND FACTORS OF POT-HOLE IN ASPHALT PAVEMENT ON BRIDGE-DECKS BY THE IMMERSION WHEEL TRACKING TEST

The presence of water in an asphart pavement on bridge-deck can lead the pavement to failure. For this research, specimens were made in laboratory. The test wheel was tracking and traversed on a specimen under supplying water from its bottom until the pot-hole was occurred, and the mechanism of occurrence and factors of influence on the pot-hole were discussed. The factors selected for the experiment are design of asphalt mixture, binder course material, difference of the boundary, supply of water, variety of aggregate, anti-stripping agent.