ASTM D6390-11 (R2017) PDF Download

The ASTM D6390-11 (R2017) standard provides a method to assess the draindown potential of asphalt mixtures during mixture design and/or field production. Draindown refers to the movement of asphalt binder away from the aggregate particles in a mixture when it is subjected to elevated temperatures.

This test method is primarily used for mixtures with high coarse aggregate content, such as porous asphalt (open-graded friction course) and stone matrix asphalt (SMA). It is designed to simulate the conditions encountered during the production, storage, transport, and placement of the mixture.

The purpose of conducting this test is to determine whether the amount of draindown in an asphalt mixture is within specified acceptable levels. By evaluating the draindown characteristics of the mixture, engineers and producers can assess the potential for the asphalt binder to separate from the aggregate particles, which can negatively impact the performance and durability of the pavement.