Simple Approach for the Determination of Temperature Susceptibility Characteristics of Pure and Modified Asphalt Binders

摘要

Asphalt is considered as a valuable construction material because of its strong, adhesive, and durable characteristics. Asphaltcement (AC) binder is a viscoelastic material with different behaviors under different climate conditions, traffic loadings, andspeed. Dynamic modulus of asphalt mixtures E* is an important factor in pavement design. The determination of E* is eitherby direct testing, which is difficult and expensive, or by using correlations with simple tests. Most correlations depend onviscosity’s determination under different temperatures and loading rates (speed), which can be calculated using temperaturesusceptibility parameters A–VTS values. This study aims to determine a simple and appropriate method to calculate A–VTSparameters using simple tests. An experimental program has been conducted for testing different typical virgin and modifiedasphalt binders in Turkey. The results have been analyzed using mechanistic–empirical pavement design method (MEPDM)with an available analysis tool. A simple method for the determination of A–VTS has been recommended using penetrationtests at temperatures of 4, 25, and 35 °C, and other significant findings were recorded.