The invention discloses a method for separating the influences of
fatigue damage and a thixotropic factor on an
asphalt modulus, which relates to a testing method for the
asphalt modulus and is used for solving the problem of limitation on the
conventional analysis of the
asphalt fatigue characteristic under the action of cyclic load with a damage theory. The method comprises the following steps of: drawing a standard relation curve of an asphalt
dynamic modulus and a
phase angle, testing relation curves of the
dynamic modulus and the
phase angle under different initial strain conditions, finding a turning point which is deviated from a
linear section on each curve, finding a dividing point between a
thixotropy influence area and a damage influence area, and fitting curve parts in front of the dividing point to obtain the values of k, alpha and beta; and fitting the
dynamic modulus of asphalt to obtain a value D, and separating the dynamic modulus of the asphalt into two parts, i.e., a modulus under the influence of
thixotropy and the reduction value of the modulus caused by damage. The method is used for researching the fatigue characteristic of asphalt.