in ASTM C127 Aggregate test , why the weight of SSD is higher than water submerged weight?
tas why we will always feel that we will be lighter when we are in the water ?Specific gravity, SG, of rock must have the SG of water (= 1) subtracted when rock is submerged to account for buoyancy.
If rock SG=3 and weighs 3 tonne, then when submerged in water it will weigh 2 tonne.
The weight of any water in the aggregate dissapears when it is submerged as it becomes part of the water.
Yes.will always feel that we will be lighter when we are in the water ?