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WHAT IS MEANT BY BULKING OF SAND??



In this article, we will discuss about WHAT IS MEANT BY BULKING OF SAND, its causes,bulking of sand limits and also bulking of sand curve.

WHAT IS MEANT BY BULKING OF SAND

BULKING OF SAND:

The increase in the volume of the sand due to the presence of moisture upto certain extent is called bulking of sand. The ratio of the volume of moist sand to the volume of dry sand s known as bulking factor. The extent of bulking depends on grading of sand. The fine sand bulks more than coarse sand because of the greater voids in fine sand than coarse sand. 
bulking of sand

For moisture content of 5-% the increase in volume will be around 20-40% depending on the grading of sand. The increased moisture content packs the sand particle closer and reduce the bulking. Thus the dry sand and fully saturated sand have the same volume. It is due to the formation of a film of water around sand particles which results in the increase in the sand volume. If proper measures are not made for the bulking of sand, results in increased cost of concrete and mortar and also results in under sanded mixes which are harsh and difficulty in working and placing.


I hope that this article will help you in understanding WHAT IS MEANT BY BULKING OF SAND. Also check out the latest articles of civil engineering on my website.

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