ABSTRACT
Impact resonance (IR) test’s capability to provide accurate estimation of the upper asymptote of dynamic modulus master curve is of a particular interest to the paving community. This study presents a practical approach to determine the IR test response, resonant frequency, of asphalt concrete at a range of temperatures from a measurement at a single temperature. To this end, a total of 86 asphalt concrete specimens were tested at a temperature range of -10 to 50°C. A second order polynomial fit was used to establish a relationship between the frequency and temperature based on the test results. The proposed approach was validated through application of a series of independent data sets. The frequency of these independent data sets was successfully predicted at a range of temperatures using a single test measurement at a single temperature. Test results indicated versatility and reliability of the approach, as manifested by high prediction accuracy.
