AASHTO T 164-22 PDF

These methods cover the quantitative determination of asphalt binder in asphalt mixtures and asphalt pavement samples. Aggregate obtained by these methods may be used for sieve analysis using AASHTO T 30.

Note—The results obtained by these methods may be affected by the age of the material tested, with older samples tending to yield slightly lower asphalt binder contents. Best quantitative results are obtained when the test is made on asphalt mixtures and pavements shortly after their preparation. It is difficult to remove all the asphalt binder when some aggregates are used; some solvent may remain within the mineral matter affecting the measured asphalt binder content.