Tracking test

The track formation test (also track formation test or wheel tracking test ) is a test method in road construction and is used to determine the resistance of asphalt to permanent deformation from high wheel loads (tendency to form ruts ).

Test procedure

An asphalt slab is produced for the test (the thickness of the slab can correspond to the actual paving thickness). During the experiment, the plate is loaded with a wheel that rolls back and forth (up to 20,000 repetitions).

The wheel has precisely defined properties. Thus, the width of the wheel 4.7 cm and which has wheel load 700  N to be. The wheel itself is made of steel and can have a hard rubber or plastic coating on the tread.

The experiment can be carried out either under water (50 ° water temperature) or in the air at 60 ° ambient temperature.

Norms and standards

Germany

• Technical test regulations for asphalt in road construction (TP A-StB) Part: Track formation test - Determination of the ruts depth in a water bath

Austria

• RVS 06/11/54 track formation test

literature

• S. Velske, H. Mentlein: Road construction technology . Werner Verlag, Düsseldorf 2002, ISBN 3-8041-3875-6 , p. 107 ff .

Web links

• Further information on the subject from the University of Wuppertal