METHOD FOR ASSESSING THE WEAR STABILITY OF TESTED ROAD SURFACE SAMPLES UNDER THE INFLUENCE OF AUTOMOBILE STUDDED TIRES AND A TEST BENCH FOR ITS IMPLEMENTATION Russian patent published in 2023 - IPC E01C23/07 G01M17/02 

FIELD: road wear testing.

SUBSTANCE: inventions are intended for carrying out comparative tests to assess the wear resistance of pavement samples under the influence of automobile studded tires. According to the method, a cylindrical sample is taken from the material of the tested pavement of specified dimensions, then the mass of the sample is determined, and it is installed in the test bench. During the test, the car wheel is rotated at a given speed. During testing, the sample is in constant axial movement along the axis of rotation of the wheel to ensure uniform wear. After the test, said sample is washed with an aqueous solution, its mass is determined, and by the difference in the mass of the sample before and after testing, the compliance of the material of the test sample with the possibility of using this material in accordance with the technical requirements for the operation of a real road surface is determined. The stand can be placed in a climatic chamber or in real atmospheric conditions to simulate the actual operating conditions of the road surface. If necessary, during the testing process, it is possible to carry out watering with water or liquid anti-icing reagents. The test bench includes the following installed as a base: a constructive unit that simulates a dynamic effect on the test sample in accordance with the dynamics of automobile studded tires, as close as possible to real road conditions, and a supporting device that is functionally designed for installing the test sample. The constructive unit is made in form of a real automobile wheel with a studded tire. The wheel is installed as a base with the possibility of rotation about its axis. The supporting device is structurally configured with the possibility of providing contact along the generatrix of the test specimen installed on it with the studded wheel tire. To achieve this, it is installed as a base with the ability to move relative to the axis of rotation of the wheel in the horizontal and vertical directions together with the test sample. In addition, the supporting device is simultaneously functionally designed for changing the load on the test sample by movement of the supporting device.

EFFECT: increasing the accuracy and reliability of the test results due to the maximum approximation to the real conditions of all phases of the impact of anti-skid studs on the test sample in the test bench.

5 cl, 1 dwg