Question

If bulking of sand is not taken into account for volumetric proportioning of concrete, what will be the result ?

• A. No effect
• B. Bulkling of concrete product will be the result
• C. More quantity of concrete per bag of cement will be produced
• D. Less quantity of concrete per bag of cement will be produced

Answer 1

The correct option is D Less quantity of concrete per bag of cement will be produced

Bulking of sand is the phenomenon by which volume of dry sand increases due to absorption of moisture.
At 5 - 6% moisture , bulking is 20 - 40% i.e. max. and at 12 -20% moisture , bulking is zero means swelling volume regain its orginal volume.