Thus, the asphalt binder content does not include the asphalt binder absorbed by the aggregate. Dust proportion is calculated and checked during the volumetric (level 1) mix design as a measure of mix acceptability. Criteria for dust proportion for all traffic levels over the planned or estimated service life of the pavement are presented in table 2.10. These are suggested for level 1, 2 and 3 designs for dense graded paving mixes.