Joint Roughness Coefficient Tester

Description

Joint Roughness Coefficient Tester ( Tilt Tester )

Joint Roughness Coefficient Tester ( Tilt Tester )  measures the roughness coefficient of a rock specimen or of a joint.

The sample is usually a rock core cut in half  lengthwise, or a core placed on another two.

The unit is also designed to test the possible fluage tendency of bituminous mixtures covering a slope of a dam subject to high sun radiations.

The fluage tendency is the permanent viscous deformation of a material.

The apparatus consists of an inclined adjustable plane on which the sample is placed.

The plane is slowly tilted until sliding of the upper surface of specimen on the lower one occurs.

The roughness index can be evaluated from the measured inclination angle.