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Q: Bulking of sand is caused due to ............
  • A. surface moisture
  • B. air voids
  • C. viscosity
  • D. clay contents
Correct Answer: Option A - Bulking of sand – The presence of moisture in sand increase the volume of sand. This is due to fact that moisture causes film of water around the sand particles which result in the increase of volume of sand. • For a moisture content of 4 to 6%, the increase in volume may be about 20% and further increase moisture content then bulking of sand decrease. • 10% moisture content by weight the bulking of sand is increased by 50%.
A. Bulking of sand – The presence of moisture in sand increase the volume of sand. This is due to fact that moisture causes film of water around the sand particles which result in the increase of volume of sand. • For a moisture content of 4 to 6%, the increase in volume may be about 20% and further increase moisture content then bulking of sand decrease. • 10% moisture content by weight the bulking of sand is increased by 50%.

Explanations:

Bulking of sand – The presence of moisture in sand increase the volume of sand. This is due to fact that moisture causes film of water around the sand particles which result in the increase of volume of sand. • For a moisture content of 4 to 6%, the increase in volume may be about 20% and further increase moisture content then bulking of sand decrease. • 10% moisture content by weight the bulking of sand is increased by 50%.