【How-to】What is the correct formula for finding the void space

CALCULATION

VMA = Voids in mineral aggregate, in percent of bulk volume, Gsb = Bulk specific gravity of the aggregate, Gmb = Bulk specific gravity of compacted mix, Ps = Aggregate, percent by total weight of mix. Where: P1 = Percent by weight of aggregate 1, etc., G1 = Bulk specific gravity of aggregate 1, etc.