METHOD FOR EVALUATING ASPHALT ELASTIC MODULUS BY FREQUENCY FOR DETERMINING MASTER CURVE

摘要

PURPOSE: A method for evaluating asphalt elastic modulus by frequency is provided to enable cheap and quick test using simple test equipment.;CONSTITUTION: A method for evaluating asphalt elastic modulus by frequency for determining master curve comprises: a step of measuring temperature of asphalt test piece; a step of generating P wave by applying impact to one side of the asphalt test piece; a step of performing harmonic wavelet transform of a signal obtained through first and second sensors attached on both sides of the asphalt test piece; a step of selecting a signal only having maximal signal to noise ratio; a step of repeating determination of a dispersion curve by changing temperature of the asphalt test piece to determine the dispersion curve corresponding to each temperature; a step of determining transition function using three or more dispersion curves among the plural dispersion curves; a step of calculating horizontal movement distance needed for moving in a dispersion curve; and a step of determining a master curve.;COPYRIGHT KIPO 2012