Why need to findout fresh wet density and Yield of concrete?
Wet density of concrete reflects the ability of concrete to function for structural support, water and solute movement, and durability. This method helps to calculate the yield of concrete per cubic meter.
Test apparatus :
- Weighing balance of accuracy 10gms.
- Tamping steel bar of 1.8 Kg, 38cm long and have a ramming face square,
- cylindrical metal measure of capacity 10 litres.
The cylindrical container shall be calibrated to calculate its actual volume by measuring the weight of the water at 270C required to fill the container to full height such that no meniscus is present above the rim of the container. Assuming the density of water as 1kg/lit at 270C, weight of the water measured will give the volume of the container (say A, ltr)
Fresh wet density of concrete = Weight of the concrete / Volume of the cylindrical measure
Yield of concrete per bag of cement (cum) = Volume of concrete produced per batch (cum)/No of 50Kg bags of cement per batch.
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