Concrete Mix Proportion Materials
Dry Volume and Wet Volume:
Dry Volume : Bulk Volume with air spaces etc.
Wet Volume : Real Volume to be used.
In dry mix volume empty spaces between particles in bulk material are filled with air. When we add water to concrete the empty spaces are filled with water, So the reduction in volume from dry to wet is not by shrinkage of material.
For example100kg of each material, their dry volume and wet volumes typically are:
Cement: Dry V - 66L, Wet V - 32 L
Sand: Dry V - 62L, Wet V - 38 L
Coarse aggregate: Dry V - 59L, Wet V - 38L
The factor of 1.54 to convert dry volume is just approximate. For each batch of materials we have to measure dry volume and actual density to accurately convert.
Dry Volume and Wet Volume:
Dry Volume : Bulk Volume with air spaces etc.
Wet Volume : Real Volume to be used.
In dry mix volume empty spaces between particles in bulk material are filled with air. When we add water to concrete the empty spaces are filled with water, So the reduction in volume from dry to wet is not by shrinkage of material.
For example100kg of each material, their dry volume and wet volumes typically are:
Cement: Dry V - 66L, Wet V - 32 L
Sand: Dry V - 62L, Wet V - 38 L
Coarse aggregate: Dry V - 59L, Wet V - 38L
The factor of 1.54 to convert dry volume is just approximate. For each batch of materials we have to measure dry volume and actual density to accurately convert.
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