Wear Tester For Road Marking Paints

The resistance of road marking paints to wearing off under the action of wheels passing over it is ascertained by subjecting a coating of the paint on a standard bituminous surface to a simulation of conditions existing under which the paint is used. The coated surface is rotated about its axis at a fixed speed and a pair of rubber wheels made to rub against it under a specified load, with water being constantly dropped on the inner wheel to simulate the effect of rain. The time taken by the paint to wear off is determined to evaluate the quality of paint.