ASTM D7906-14 PDF Download

The ASTM D7906-14 standard provides a method for extracting asphalt from an asphalt paving mixture using a suitable solvent and recovering the asphalt without significantly altering its properties. The recovered asphalt can then be tested using the same methods as the original asphalt cement, allowing for comparisons between the original and recovered asphalt properties. However, it is important to note that the recovered binder properties may not exactly represent the properties of the original asphalt binder due to external factors such as aging, contamination, and molecular changes caused by exposure to heat and solvents. As a result, the recovered asphalt binder properties should not be solely relied upon for acceptance purposes. It is also highlighted that the quality of the results produced by this practice depends on the competence of the personnel performing the procedure and the calibration and maintenance of the equipment used. Compliance with the recommended guidelines and standards alone does not guarantee reliable results, as there are multiple factors that can impact the accuracy and reliability of the testing.