Job Mix Concrete VolumePosted in Concrete Engineering | Email This Post |
A trial batch of concrete can be tested to determine how much concrete is to be delivered by the job mix. To determine the volume obtained for the job, add the absolute volume V a of the four components—cements, gravel, sand, and water.
Find the V a for each component from
V a = W L / ( SG ) W u
where V a = absolute volume, ft 3 (m 3 )
W L = weight of material, lb (kg)
S G = specific gravity of the material
W u = density of water at atmospheric conditions (62.4 lb/ft 3 1000 kg /m 3 )
Then, job yield equals the sum of V a for cement, gravel, sand, and water.