Mix Design

Mix Design Fundamentals

HMA consists of two basic ingredients: aggregate and asphalt binder.  HMA mix design is the process of determining what aggregate to use, what asphalt binder to use and what the optimum combination of these two ingredients ought to be.  There are several different...

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Hveem Method

WSDOT currently uses the Superpave (Gyratory) mix design method, but historically it used the Hveem method.  Like the Marshall and Superpave methods, the Hveem method has been proven to produce quality HMA from which long-lasting pavements can be constructed.  This...

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Superpave (Gyratory) Method

WSDOT uses the Superpave mix design method (also commonly called the Gyratory mix design method).  Like the Hveem and Marshall methods, the Superpave method has been proven to produce quality HMA from which long-lasting pavements can be constructed.  This section...

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