Patent ID: 7578207

Claim:
A measuring method of concrete materials, comprising the steps of: throwing water and aggregate into a measurement tank having an opening for overflow formed thereon so that the aggregate is submerged in the water as submergence aggregate and so that the water overflows from the opening for overflow; measuring total mass M f of the submergence aggregate; and calculating mass M a of the aggregate in a saturated surface-dried condition and mass M w of the water from the fact that an internal volume at overflow from said measurement tank is equal to total volume V f of the submergence aggregate by solving the following two formulas: M a +M w =M f (1) M a /ρ a +M w /ρ w =V f (2) where ρ a is a density of the aggregate in the saturated surface-dried condition and ρ w is a density of the water.