Sources of Sand: Sand particles consist of small grains of silica (Si02).
It is formed by the decomposition of sand stones due to various
effects of weather. The following are the natural sources of
sand.
a.
Pit sand
b.
River sand
c.
Sea sand
a.
Pit Sand: This sand is found as deposits in soil and it is obtained by
forming pits to a depth of about 1m to 2m from ground level. Pit
sand consists of sharp angular grains, which are free from salts
for making mortar, clean pit sand free from organic and clay should
only be used.
b.
River Sand: This sand is obtained from beds of rivers. River sand consists
of fine rounded grains. Colour of river sand is almost white.
As the river sand is usually available in clean condition, it is
widely used for all purposes.
c.
Sea Sand: This sand is obtained from sea shores. Sea sand consists
of rounded grains in light brown colour. Sea sand consists
of salts which attract the moisture from the atmosphere and
causes dampness, efflorescence and disintegration of work. Due
to all such reasons, sea sand is not recommendable for engineering works.
However be used as a local material after being
thoroughly washed to remove the salts.
Sources of Sand:
Reviewed by SANTHOSH KUMAR
on
July 08, 2018
Rating:
Reviewed by SANTHOSH KUMAR
on
July 08, 2018
Rating:
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