The invention discloses a method for testing the
fatigue damage of an inorganic binding material stabilizing material, and belongs to the field of
road engineering. The method comprises the following steps of:
cutting a vibration moulding large beam test piece serving as matrix into a plurality of small beam test pieces which meet the specification, determining the fatigue load of the small beam test pieces on the same layer through the bending strength test of the small beam test pieces on the same layer, performing four-point bent beam dynamic repeat load test on the basis, measuring the central deflection change of small beams in the test process to obtain the decay law of dynamic bending modulus along with fatigue load frequency in the approximately actual stress state, and the growthlaw of the bending stress along with the fatigue load frequency, and performing the repeat load test under the conditions of different stress ratios according to the method to obtain the
fatigue damage life of the inorganic binding material stable broken stone material. Compared with the conventional fatigue test method, the method overcomes the technical problems of large fatigue failure load frequency variation and low reliability of a fatigue equation in the conventional fatigue test method, realizes the
accurate estimation of the fatigue life of the inorganic binding material stable broken stone material, discloses the
fatigue damage law of the inorganic binding material stable material, improves the reliability of road design and has good popularization and application value.