In verifying and evaluating the low-temperature performance of high-viscosity asphalt binders, this study sought to present accurate standards to overcome the limitations of high-viscosity asphalt binders by improving the shortcomings of the previously developed mathematical modeling power in the process of reaching the All the activities were performed by advanced mathematical modeling approach and corresponding analyses. As an experimental effort, flexural beam test was performed under various temperature (-15°C, -20°C, -25°C) The analysis of test was conducted by two type of data: displacement vs. load, time vs. load, the flexural energy and the flexural stiffness. As a result of the test, various fracture phenomena occur due to the nature of the low-temperature bending test. Many difficulties are likely to arise in predicting and analyzing the low-temperature flexural beam test characteristics of high-viscosity asphalt binder using only test values. Therefore, it is believed that there is a need to accurately identify the engineering characteristics of various high-viscosity asphalt binders through mathematical modeling. To improve mathematical modeling, time-load prediction equations in the form of log-exponential function and natural log-exponential function were developed and presented based on the low-temperature bending test results