),

(7.

12)

p ag

.

ag

ag

.

c

where F , C

– quantities of dry sand and crushed stone (gravel) in

ag

ag

laboratory (nominal) concrete mixture, kg/m3; H , H

– humidity of sand

f.ag

c.ag

and crushed stone (gravel), parts of unit.

Accordingly for manufacture of concrete, quantity of water (W ) is diminished

p

as compared to laboratory mixture on mass of water in aggregates:

W = W − F ⋅ H

− C ⋅ H